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)
		document.getElementById(subobjstr).style.display=(document.getElementById(subobjstr).style.display!='block')? 'block' : 'none';
		//if (document.getElementById('ifrm')) {
		//	document.getElementById('ifrm').height = document.getElementById('subcontent').offsetHeight - 2;
		//	document.getElementById('ifrm').width = document.getElementById('subcontent').offsetWidth - 3;
		//}
		//alert(curobj);
		//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';
}