/***********************************************
		* Drop Down/ Overlapping Content- © Dynamic Drive (www.dynamicdrive.com)
		* This notice must stay intact for legal use.
		* Visit http://www.dynamicdrive.com/ for full source code
		***********************************************/
		
		function getposOffset(overlay, offsettype){
		var totaloffset=(offsettype=="left")? overlay.offsetLeft : overlay.offsetTop;
		var parentEl=overlay.offsetParent;
		while (parentEl!=null){
		totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
		parentEl=parentEl.offsetParent;
		}
		return totaloffset;
		}
		
		function overlay(curobj, subobjstr, opt_position){
		if (document.getElementById){
		var subobj=document.getElementById(subobjstr)
		subobj.style.display=(subobj.style.display!="block")? "block" : "none"
		var xpos=getposOffset(curobj, "left")+((typeof opt_position!="undefined" && opt_position.indexOf("right")!=-1)? -(subobj.offsetWidth-curobj.offsetWidth) : 0) 
		var ypos=getposOffset(curobj, "top")+((typeof opt_position!="undefined" && opt_position.indexOf("bottom")!=-1)? curobj.offsetHeight : 0)
		subobj.style.left=xpos+"px"
		subobj.style.top=ypos+"px"
		return false
		}
		else
		return true
		}
		
		function overlayclose(subobj){
		document.getElementById(subobj).style.display="none"
		}