var answer	= new Array();
answer[1]		= 'b';
answer[2]		= 'a';
answer[3]		= 'a';
answer[4]		= 'b';
answer[5]		= 'b';
answer[6]		= 'b';
answer[7]		= 'b';
answer[8]		= 'a';
answer[9]		= 'b';
answer[10]		= 'a';
answer[11]		= 'd';
answer[12]		= 'd';
answer[13]		= 'd';
answer[14]		= 'd';
answer[15]		= 'b';
answer[16]		= 'c';
answer[17]		= 'd';
answer[18]		= 'b';
answer[19]		= 'a';
answer[20]		= 'a';
answer[21]		= 'abcd';
answer[22]		= 'abd';
answer[23]		= 'acd';
answer[24]		= 'abcd';
answer[25]		= 'abcd';
answer[26]		= 'abd';
answer[27]		= 'ac';
answer[28]		= 'abd';
answer[29]		= 'abc';
answer[30]		= 'bcd';
answer[31]		= 'acd';
answer[32]		= 'acd';
answer[33]		= 'bcd';
answer[34]		= 'abc';
answer[35]		= 'abcd';
answer[36]		= 'abcd';
answer[37]		= 'bcd';
answer[38]		= 'ac';
answer[39]		= 'bd';
answer[39]		= 'abcd';

function scoremarks()
{  
   var marks=0;
   var itemvalue;
   for (i = 1; i < 21; i++)
   {
	 var itemname="item[item"+(i+2)+"]";
	 var itemoj=document.getElementsByName(itemname);
	   for (j = 0; j < itemoj.length; j++)
		 {     
		   if (itemoj[j].checked=="1") 
			   {         
			     itemvalue=itemoj[j].value     
               }   
		 }
	 if(itemvalue==answer[i])
	 {
	    marks=marks+2;
	 }
   }
   for (i = 21; i < 41; i++)
   {
	 itemvalue="";
	 var itemname="item[item"+(i+2)+"][]";
	 var itemoj=document.getElementsByName(itemname);
	   for (j = 0; j < itemoj.length; j++)
		 {     
		   if (itemoj[j].checked=="1") 
			   {         
			     itemvalue=itemvalue+itemoj[j].value
				 //alert(itemoj[j].value);
               }   
		 }
	 if(itemvalue==answer[i])
	 {
	    marks=marks+3;
	 }
   }
   document.getElementsByName("item[item43]")[0].value=marks;
}