function showHide(num)
{
	var el2=document.getElementById("ar"+num);
	var ostx = 0;
	var osty = 0;
              
	while(el2 != null)
	{
    	ostx += el2.offsetLeft;
    	osty += el2.offsetTop;
    	el2 = el2.offsetParent;
	}
	
	var i=1;
	for (i=1;i<=noofexp;i++)
	{
		if(i!=num)
		{	
			var el1=document.getElementById("ans"+i);
			if(el1)
			{
				var el2=document.getElementById("ar"+i);
				if(el1.style.display!="none")
				{
				    el1.style.display="none";
				    el2.src="images/arrowdown.gif";
				}
			}
		}
	}
	var el1=document.getElementById("ans"+num);
	if(!el1)return true;
	var el2=document.getElementById("ar"+num);
	if(el1.style.display=="none")
	{
		el1.style.display="block";
		el2.src="images/arrowup.gif";
		var stx = 0;
		var sty = 0;
              
		while(el2 != null)
		{
	    	stx += el2.offsetLeft;
	    	sty += el2.offsetTop;
	    	el2 = el2.offsetParent;
		}
		
        if(osty>sty)
			window.scrollTo(ostx,sty);
  	}
  	else 
  	{
    	el1.style.display="none";
		el2.src="images/arrowdown.gif";
	}
	return true;
}

function colorOver(sec)
{
sec.style.color='#FF6200';
}

function colorLeave(sec)
{
sec.style.color='#03539D';
}

function navhover(sec)
{
	if(sec != navpage)
	{
		document["nav"+sec].src="menubar/menu"+sec+"hover.png";
	}
}

function navout(sec)
{
	if(sec != navpage)
	{
		document["nav"+sec].src="menubar/menu"+sec+".png";
	}
}

function navset(sec)
{
	document["nav"+sec].src="menubar/menu"+sec+"sel.png";
}

function getthispage()
{
var t=document.location.href;
t=t.substring(t.lastIndexOf("/")+1);
t=t.substring(0,t.lastIndexOf("."));
if(t)
	return t;
return "index";
}