function toptab(top,clsname){
	document.getElementById(top).className=clsname;
}
function toptabout(top,clsname){
	document.getElementById(top).className=clsname;
}
function showhide(element,z,k){
	var h=parseInt(k);
	h=h+1;
	for (var i=1;i< h;i++)
	{
		var control=element+i;
		
		if(control!=(element+z))
		{
			
			document.getElementById(element+i).style.display="none";	
			document.getElementById((element+i).substr(1)).innerHTML="+";
		}
	}
	document.getElementById(element+z).style.display="Block";	
	document.getElementById((element+z).substr(1)).innerHTML="-";
	
	
	
}