/*======================================================================*\
|| #################################################################### ||
|| #                برمجة وتصميم : عبدالرحمن محمد الشهري              # ||
|| # ---------------------------------------------------------------- # ||
|| #                       Copyright ©2000-2006                       # ||
|| #    حقوق البرامجة والتصميم محفوظة لشبكة طلاب وطالبات جامعة طيبة    # ||
|| # ----------------- شبكة طلاب وطالبات جامعة طيبة -----------------  # ||
|| #     http://www.ta-u.com     |      http://www.ta-u.net           # ||
|| #################################################################### ||
\*======================================================================*/

// #############################################################################

function chek()
{
//////// ---  1  ---
		if ( document.calculate_degree.C1.checked == true )
		{
			document.calculate_degree.name_1.disabled = false ;
			document.calculate_degree.D1.disabled = false ;
			document.calculate_degree.H1.disabled = false ;
			document.calculate_degree.name_1.style.backgroundColor="" ;
			document.calculate_degree.D1.style.backgroundColor="" ;
			document.calculate_degree.H1.style.backgroundColor="" ;

		}
		else
		{
			document.calculate_degree.name_1.disabled = true ;
			document.calculate_degree.D1.disabled = true ;
			document.calculate_degree.H1.disabled = true ;
			document.calculate_degree.name_1.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D1.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H1.style.backgroundColor="#E0E0E0" ;

		}



//////// ---  2  ---
		if ( document.calculate_degree.C2.checked == true )
		{
			document.calculate_degree.name_2.disabled = false ;
			document.calculate_degree.D2.disabled = false ;
			document.calculate_degree.H2.disabled = false ;
			document.calculate_degree.name_2.style.backgroundColor="" ;
			document.calculate_degree.D2.style.backgroundColor="" ;
			document.calculate_degree.H2.style.backgroundColor="" ;

		}
		else
		{
			document.calculate_degree.name_2.disabled = true ;
			document.calculate_degree.D2.disabled = true ;
			document.calculate_degree.H2.disabled = true ;
			document.calculate_degree.name_2.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D2.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H2.style.backgroundColor="#E0E0E0" ;

		}


//////// ---  3  ---
		if ( document.calculate_degree.C3.checked == true )
		{
			document.calculate_degree.name_3.disabled = false ;
			document.calculate_degree.D3.disabled = false ;
			document.calculate_degree.H3.disabled = false ;
			document.calculate_degree.name_3.style.backgroundColor="" ;
			document.calculate_degree.D3.style.backgroundColor="" ;
			document.calculate_degree.H3.style.backgroundColor="" ;

		}
		else
		{
			document.calculate_degree.name_3.disabled = true ;
			document.calculate_degree.D3.disabled = true ;
			document.calculate_degree.H3.disabled = true ;
			document.calculate_degree.name_3.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D3.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H3.style.backgroundColor="#E0E0E0" ;

		}


//////// ---  4  ---
		if ( document.calculate_degree.C4.checked == true )
		{
			document.calculate_degree.name_4.disabled = false ;
			document.calculate_degree.D4.disabled = false ;
			document.calculate_degree.H4.disabled = false ;
			document.calculate_degree.name_4.style.backgroundColor="" ;
			document.calculate_degree.D4.style.backgroundColor="" ;
			document.calculate_degree.H4.style.backgroundColor="" ;

		}
		else
		{
			document.calculate_degree.name_4.disabled = true ;
			document.calculate_degree.D4.disabled = true ;
			document.calculate_degree.H4.disabled = true ;
			document.calculate_degree.name_4.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D4.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H4.style.backgroundColor="#E0E0E0" ;

		}


//////// ---  5  ---
		if ( document.calculate_degree.C5.checked == true )
		{
			document.calculate_degree.name_5.disabled = false ;
			document.calculate_degree.D5.disabled = false ;
			document.calculate_degree.H5.disabled = false ;
			document.calculate_degree.name_5.style.backgroundColor="" ;
			document.calculate_degree.D5.style.backgroundColor="" ;
			document.calculate_degree.H5.style.backgroundColor="" ;

		}
		else
		{
			document.calculate_degree.name_5.disabled = true ;
			document.calculate_degree.D5.disabled = true ;
			document.calculate_degree.H5.disabled = true ;
			document.calculate_degree.name_5.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D5.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H5.style.backgroundColor="#E0E0E0" ;

		}


//////// ---  6  ---
		if ( document.calculate_degree.C6.checked == true )
		{
			document.calculate_degree.name_6.disabled = false ;
			document.calculate_degree.D6.disabled = false ;
			document.calculate_degree.H6.disabled = false ;
			document.calculate_degree.name_6.style.backgroundColor="" ;
			document.calculate_degree.D6.style.backgroundColor="" ;
			document.calculate_degree.H6.style.backgroundColor="" ;

		}
		else
		{
			document.calculate_degree.name_6.disabled = true ;
			document.calculate_degree.D6.disabled = true ;
			document.calculate_degree.H6.disabled = true ;
			document.calculate_degree.name_6.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D6.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H6.style.backgroundColor="#E0E0E0" ;

		}


//////// ---  7  ---
		if ( document.calculate_degree.C7.checked == true )
		{
			document.calculate_degree.name_7.disabled = false ;
			document.calculate_degree.D7.disabled = false ;
			document.calculate_degree.H7.disabled = false ;
			document.calculate_degree.name_7.style.backgroundColor="" ;
			document.calculate_degree.D7.style.backgroundColor="" ;
			document.calculate_degree.H7.style.backgroundColor="" ;

		}
		else
		{
			document.calculate_degree.name_7.disabled = true ;
			document.calculate_degree.D7.disabled = true ;
			document.calculate_degree.H7.disabled = true ;
			document.calculate_degree.name_7.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D7.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H7.style.backgroundColor="#E0E0E0" ;

		}


//////// ---  8  ---
		if ( document.calculate_degree.C8.checked == true )
		{
			document.calculate_degree.name_8.disabled = false ;
			document.calculate_degree.D8.disabled = false ;
			document.calculate_degree.H8.disabled = false ;
			document.calculate_degree.name_8.style.backgroundColor="" ;
			document.calculate_degree.D8.style.backgroundColor="" ;
			document.calculate_degree.H8.style.backgroundColor="" ;

		}
		else
		{
			document.calculate_degree.name_8.disabled = true ;
			document.calculate_degree.D8.disabled = true ;
			document.calculate_degree.H8.disabled = true ;
			document.calculate_degree.name_8.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D8.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H8.style.backgroundColor="#E0E0E0" ;

		}

//////// ---  9  ---
		if ( document.calculate_degree.C9.checked == true )
		{
			document.calculate_degree.name_9.disabled = false ;
			document.calculate_degree.D9.disabled = false ;
			document.calculate_degree.H9.disabled = false ;
			document.calculate_degree.name_9.style.backgroundColor="" ;
			document.calculate_degree.D9.style.backgroundColor="" ;
			document.calculate_degree.H9.style.backgroundColor="" ;

		}
		else
		{
			document.calculate_degree.name_9.disabled = true ;
			document.calculate_degree.D9.disabled = true ;
			document.calculate_degree.H9.disabled = true ;
			document.calculate_degree.name_9.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D9.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H9.style.backgroundColor="#E0E0E0" ;

		}

//////// ---  10  ---
		if ( document.calculate_degree.C10.checked == true )
		{
			document.calculate_degree.name_10.disabled = false ;
			document.calculate_degree.D10.disabled = false ;
			document.calculate_degree.H10.disabled = false ;
			document.calculate_degree.name_10.style.backgroundColor="" ;
			document.calculate_degree.D10.style.backgroundColor="" ;
			document.calculate_degree.H10.style.backgroundColor="" ;

		}
		else
		{
			document.calculate_degree.name_10.disabled = true ;
			document.calculate_degree.D10.disabled = true ;
			document.calculate_degree.H10.disabled = true ;
			document.calculate_degree.name_10.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D10.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H10.style.backgroundColor="#E0E0E0" ;

		}


//////// ---  11  ---
		if ( document.calculate_degree.C11.checked == true )
		{
			document.calculate_degree.name_11.disabled = false ;
			document.calculate_degree.D11.disabled = false ;
			document.calculate_degree.H11.disabled = false ;
			document.calculate_degree.name_11.style.backgroundColor="" ;
			document.calculate_degree.D11.style.backgroundColor="" ;
			document.calculate_degree.H11.style.backgroundColor="" ;

		}
		else
		{
			document.calculate_degree.name_11.disabled = true ;
			document.calculate_degree.D11.disabled = true ;
			document.calculate_degree.H11.disabled = true ;
			document.calculate_degree.name_11.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D11.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H11.style.backgroundColor="#E0E0E0" ;

		}


//////// ---  12  ---
		if ( document.calculate_degree.C12.checked == true )
		{
			document.calculate_degree.name_12.disabled = false ;
			document.calculate_degree.D12.disabled = false ;
			document.calculate_degree.H12.disabled = false ;
			document.calculate_degree.name_12.style.backgroundColor="" ;
			document.calculate_degree.D12.style.backgroundColor="" ;
			document.calculate_degree.H12.style.backgroundColor="" ;

		}
		else
		{
			document.calculate_degree.name_12.disabled = true ;
			document.calculate_degree.D12.disabled = true ;
			document.calculate_degree.H12.disabled = true ;
			document.calculate_degree.name_12.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D12.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H12.style.backgroundColor="#E0E0E0" ;

		}

}


function ranking(x)
{
	if ( x < 0 || x > 100 )
	{
		window.alert("هناك خطأ في إحدى الدرجات التي أدخلتها .. فضلا تأكد منها بشكل صحيح") ;
	}

	else
	{
			 if ( x >= 95 && x <= 100 )
			Dx = 5.00 ;

		else if ( x >= 90 && x < 95 )
			Dx = 4.75 ;

		else if ( x >= 85 && x < 90 )
			Dx = 4.50 ;

		else if ( x >= 80 && x < 85 )
			Dx = 4.00 ;

		else if ( x >= 75 && x < 80 )
			Dx = 3.50 ;

		else if ( x >= 70 && x < 75 )
			Dx = 3.00 ;

		else if ( x >= 65 && x < 70 )
			Dx = 2.50 ;

		else if ( x >= 60 && x < 65 )
			Dx = 2.00 ;

		else if ( x >= 0 && x < 60 )
			Dx = 1.00 ;

		return Dx ;
	}
}


function calculate()
{
	active = '1' ;
	document.calculate_degree.Result_1.value = "" ;
	document.calculate_degree.Result_2.value = "" ;

	if (document.calculate_degree.C1.checked == false && document.calculate_degree.C2.checked == false && document.calculate_degree.C3.checked == false &&
		document.calculate_degree.C4.checked == false && document.calculate_degree.C5.checked == false && document.calculate_degree.C6.checked == false &&
		document.calculate_degree.C7.checked == false && document.calculate_degree.C8.checked == false && document.calculate_degree.C9.checked == false &&
		document.calculate_degree.C10.checked == false && document.calculate_degree.C11.checked == false && document.calculate_degree.C12.checked == false )
	{
		alert ("عفوا .. لايوجد حقول مفعلة حتى يقوم البرنامج بحسابها ..!!")  ;
	}
	
	if ( document.calculate_degree.C1.checked == true )
	{
		if (( document.calculate_degree.D1.value == "")||(document.calculate_degree.H1.value == ""))
		{
			active = '0' ;		
			alert("عفوا .. هناك خانات قمت بتفعيلها ولكنها فارغة ، فضلا عطلها نهائيا أو املء الفراغات المطلوبة");
			return false ;
		}	
	}
	
	if ( document.calculate_degree.C2.checked == true )
	{
		if (( document.calculate_degree.D2.value == "")||(document.calculate_degree.H2.value == ""))
		{
			active = '0' ;		
			alert("عفوا .. هناك خانات قمت بتفعيلها ولكنها فارغة ، فضلا عطلها نهائيا أو املء الفراغات المطلوبة");
			return false ;
			
		}	
	}
	
	if ( document.calculate_degree.C3.checked == true )
	{
		if (( document.calculate_degree.D3.value == "")||(document.calculate_degree.H3.value == ""))
		{
			active = '0' ;
			alert("عفوا .. هناك خانات قمت بتفعيلها ولكنها فارغة ، فضلا عطلها نهائيا أو املء الفراغات المطلوبة");
			return false ;

		}	
	}
	
	if ( document.calculate_degree.C4.checked == true )
	{
		if (( document.calculate_degree.D4.value == "")||(document.calculate_degree.H4.value == ""))
		{
			active = '0' ;
			alert("عفوا .. هناك خانات قمت بتفعيلها ولكنها فارغة ، فضلا عطلها نهائيا أو املء الفراغات المطلوبة");
			return false ;

		}	
	}
	
	if ( document.calculate_degree.C5.checked == true )
	{
		if (( document.calculate_degree.D5.value == "")||(document.calculate_degree.H5.value == ""))
		{
			active = '0' ;
			alert("عفوا .. هناك خانات قمت بتفعيلها ولكنها فارغة ، فضلا عطلها نهائيا أو املء الفراغات المطلوبة");
			return false ;

		}	
	}
	
	if ( document.calculate_degree.C6.checked == true )
	{
		if (( document.calculate_degree.D6.value == "")||(document.calculate_degree.H6.value == ""))
		{
			active = '0' ;
			alert("عفوا .. هناك خانات قمت بتفعيلها ولكنها فارغة ، فضلا عطلها نهائيا أو املء الفراغات المطلوبة");
			return false ;

		}	
	}
	
	if ( document.calculate_degree.C7.checked == true )
	{
		if (( document.calculate_degree.D7.value == "")||(document.calculate_degree.H7.value == ""))
		{
			active = '0' ;
			alert("عفوا .. هناك خانات قمت بتفعيلها ولكنها فارغة ، فضلا عطلها نهائيا أو املء الفراغات المطلوبة");
			return false ;

		}	
	}
	
	if ( document.calculate_degree.C8.checked == true )
	{
		if (( document.calculate_degree.D8.value == "")||(document.calculate_degree.H8.value == ""))
		{
			active = '0' ;
			alert("عفوا .. هناك خانات قمت بتفعيلها ولكنها فارغة ، فضلا عطلها نهائيا أو املء الفراغات المطلوبة");
			return false ;

		}	
	}
	
	if ( document.calculate_degree.C9.checked == true )
	{
		if (( document.calculate_degree.D9.value == "")||(document.calculate_degree.H9.value == ""))
		{
			active = '0' ;
			alert("عفوا .. هناك خانات قمت بتفعيلها ولكنها فارغة ، فضلا عطلها نهائيا أو املء الفراغات المطلوبة");
			return false ;

		}	
	}
	
	if ( document.calculate_degree.C10.checked == true )
	{
		if (( document.calculate_degree.D10.value == "")||(document.calculate_degree.H10.value == ""))
		{
			active = '0' ;
			alert("عفوا .. هناك خانات قمت بتفعيلها ولكنها فارغة ، فضلا عطلها نهائيا أو املء الفراغات المطلوبة");
			return false ;

		}	
	}
	
	if ( document.calculate_degree.C11.checked == true )
	{
		if (( document.calculate_degree.D11.value == "")||(document.calculate_degree.H11.value == ""))
		{
			active = '0' ;
			alert("عفوا .. هناك خانات قمت بتفعيلها ولكنها فارغة ، فضلا عطلها نهائيا أو املء الفراغات المطلوبة");
			return false ;

		}	
	}
	
	if ( document.calculate_degree.C12.checked == true )
	{
		if (( document.calculate_degree.D12.value == "")||(document.calculate_degree.H12.value == ""))
		{
			active = '0' ;
			alert("عفوا .. هناك خانات قمت بتفعيلها ولكنها فارغة ، فضلا عطلها نهائيا أو املء الفراغات المطلوبة");
			return false ;

		}	
	}
	
	if (active == '1')
	{
		calculate_f() ;
	}
}


function calculate_f()
{

	var sum = 0 ;

		if ( document.calculate_degree.C1.checked == true )
		{
			sum = sum + ( ranking(document.calculate_degree.D1.value) * document.calculate_degree.H1.value ) ;
		}

		if ( document.calculate_degree.C2.checked == true )
		{
			sum = sum + ( ranking(document.calculate_degree.D2.value) * document.calculate_degree.H2.value ) ;
		}

		if ( document.calculate_degree.C3.checked == true )
		{
			sum = sum + ( ranking(document.calculate_degree.D3.value) * document.calculate_degree.H3.value ) ;
		}

		if ( document.calculate_degree.C4.checked == true )
		{
			sum = sum + ( ranking(document.calculate_degree.D4.value) * document.calculate_degree.H4.value ) ;
		}

		if ( document.calculate_degree.C5.checked == true )
		{
			sum = sum + ( ranking(document.calculate_degree.D5.value) * document.calculate_degree.H5.value ) ;
		}

		if ( document.calculate_degree.C6.checked == true )
		{
			sum = sum + ( ranking(document.calculate_degree.D6.value) * document.calculate_degree.H6.value ) ;
		}

		if ( document.calculate_degree.C7.checked == true )
		{
			sum = sum + ( ranking(document.calculate_degree.D7.value) * document.calculate_degree.H7.value ) ;
		}

		if ( document.calculate_degree.C8.checked == true )
		{
			sum = sum + ( ranking(document.calculate_degree.D8.value) * document.calculate_degree.H8.value ) ;
		}

		if ( document.calculate_degree.C9.checked == true )
		{
			sum = sum + ( ranking(document.calculate_degree.D9value) * document.calculate_degree.H9.value ) ;
		}

		if ( document.calculate_degree.C10.checked == true )
		{
			sum = sum + ( ranking(document.calculate_degree.D10.value) * document.calculate_degree.H10.value ) ;
		}

		if ( document.calculate_degree.C11.checked == true )
		{
			sum = sum + ( ranking(document.calculate_degree.D11.value) * document.calculate_degree.H11.value ) ;
		}

		if ( document.calculate_degree.C12.checked == true )
		{
			sum = sum + ( ranking(document.calculate_degree.D12.value) * document.calculate_degree.H12.value ) ;
		}



	var Hours = 0 ;

		if ( document.calculate_degree.C1.checked == true )
			Hours  = Hours + parseInt ( document.calculate_degree.H1.value ) ;

		if ( document.calculate_degree.C2.checked == true )
			Hours  = Hours + parseInt ( document.calculate_degree.H2.value ) ;

		if ( document.calculate_degree.C3.checked == true )
			Hours  = Hours + parseInt ( document.calculate_degree.H3.value ) ;

		if ( document.calculate_degree.C4.checked == true )
			Hours  = Hours + parseInt ( document.calculate_degree.H4.value ) ;

		if ( document.calculate_degree.C5.checked == true )
			Hours  = Hours + parseInt ( document.calculate_degree.H5.value ) ;

		if ( document.calculate_degree.C6.checked == true )
			Hours  = Hours + parseInt ( document.calculate_degree.H6.value ) ;

		if ( document.calculate_degree.C7.checked == true )
			Hours  = Hours + parseInt ( document.calculate_degree.H7.value ) ;

		if ( document.calculate_degree.C8.checked == true )
			Hours  = Hours + parseInt ( document.calculate_degree.H8.value ) ;

		if ( document.calculate_degree.C9.checked == true )
			Hours  = Hours + parseInt ( document.calculate_degree.H9.value ) ;

		if ( document.calculate_degree.C10.checked == true )
			Hours  = Hours + parseInt ( document.calculate_degree.H10.value ) ;

		if ( document.calculate_degree.C11.checked == true )
			Hours  = Hours + parseInt ( document.calculate_degree.H11.value ) ;

		if ( document.calculate_degree.C12.checked == true )
			Hours  = Hours + parseInt ( document.calculate_degree.H12.value ) ;


		document.calculate_degree.Result_1.value = sum / Hours ;

		document.calculate_degree.Result_2.value =
		(   (parseFloat( document.calculate_degree.Last_D.value ) *
		  	(parseFloat( document.calculate_degree.All_H.value )   ) + sum ) /
		  	(parseFloat( document.calculate_degree.All_H.value ) + Hours )) ;
}


function restart()
{


			document.calculate_degree.C1.checked = false
			document.calculate_degree.name_1.disabled = true ;
			document.calculate_degree.D1.disabled = true ;
			document.calculate_degree.H1.disabled = true ;
			document.calculate_degree.name_1.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D1.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H1.style.backgroundColor="#E0E0E0" ;

			document.calculate_degree.C2.checked = false
			document.calculate_degree.name_2.disabled = true ;
			document.calculate_degree.D2.disabled = true ;
			document.calculate_degree.H2.disabled = true ;
			document.calculate_degree.name_2.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D2.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H2.style.backgroundColor="#E0E0E0" ;

			document.calculate_degree.C3.checked = false
			document.calculate_degree.name_3.disabled = true ;
			document.calculate_degree.D3.disabled = true ;
			document.calculate_degree.H3.disabled = true ;
			document.calculate_degree.name_3.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D3.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H3.style.backgroundColor="#E0E0E0" ;

			document.calculate_degree.C4.checked = false
			document.calculate_degree.name_4.disabled = true ;
			document.calculate_degree.D4.disabled = true ;
			document.calculate_degree.H4.disabled = true ;
			document.calculate_degree.name_4.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D4.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H4.style.backgroundColor="#E0E0E0" ;

			document.calculate_degree.C5.checked = false
			document.calculate_degree.name_5.disabled = true ;
			document.calculate_degree.D5.disabled = true ;
			document.calculate_degree.H5.disabled = true ;
			document.calculate_degree.name_5.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D5.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H5.style.backgroundColor="#E0E0E0" ;

			document.calculate_degree.C6.checked = false
			document.calculate_degree.name_6.disabled = true ;
			document.calculate_degree.D6.disabled = true ;
			document.calculate_degree.H6.disabled = true ;
			document.calculate_degree.name_6.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D6.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H6.style.backgroundColor="#E0E0E0" ;

			document.calculate_degree.C7.checked = false
			document.calculate_degree.name_7.disabled = true ;
			document.calculate_degree.D7.disabled = true ;
			document.calculate_degree.H7.disabled = true ;
			document.calculate_degree.name_7.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D7.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H7.style.backgroundColor="#E0E0E0" ;

			document.calculate_degree.C8.checked = false
			document.calculate_degree.name_8.disabled = true ;
			document.calculate_degree.D8.disabled = true ;
			document.calculate_degree.H8.disabled = true ;
			document.calculate_degree.name_8.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D8.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H8.style.backgroundColor="#E0E0E0" ;

			document.calculate_degree.C9.checked = false
			document.calculate_degree.name_9.disabled = true ;
			document.calculate_degree.D9.disabled = true ;
			document.calculate_degree.H9.disabled = true ;
			document.calculate_degree.name_9.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D9.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H9.style.backgroundColor="#E0E0E0" ;

			document.calculate_degree.C10.checked = false
			document.calculate_degree.name_10.disabled = true ;
			document.calculate_degree.D10.disabled = true ;
			document.calculate_degree.H10.disabled = true ;
			document.calculate_degree.name_10.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D10.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H10.style.backgroundColor="#E0E0E0" ;

			document.calculate_degree.C11.checked = false
			document.calculate_degree.name_11.disabled = true ;
			document.calculate_degree.D11.disabled = true ;
			document.calculate_degree.H11.disabled = true ;
			document.calculate_degree.name_11.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D11.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H11.style.backgroundColor="#E0E0E0" ;

			document.calculate_degree.C12.checked = false
			document.calculate_degree.name_12.disabled = true ;
			document.calculate_degree.D12.disabled = true ;
			document.calculate_degree.H12.disabled = true ;
			document.calculate_degree.name_12.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.D12.style.backgroundColor="#E0E0E0" ;
			document.calculate_degree.H12.style.backgroundColor="#E0E0E0" ;

}