function TagChange(objstring,a,n,ClassName,nClassName,subName){
		for(i=0;i<=n-1;i++)
		{
			obj=document.getElementById(objstring + i.toString())
			if(i==a)
			{
				obj.className=ClassName
				document.getElementById(subName + i.toString()).style.display="";
			}
			else
			{
				obj.className=nClassName
				document.getElementById(subName + i.toString()).style.display="none";
			}
		}
	}