function allocateSidebarHeight() {
	
	var middleColumn = document.getElementById("middleColumn");
	var leftColumn = document.getElementById("leftColumn");
	var rightColumn = document.getElementById("rightColumn");
	var leftDivider = document.getElementById("ver_divider1");
	var rightDivider = document.getElementById("ver_divider2");
	
	if((middleColumn.offsetHeight) > leftDivider.offsetHeight) {
		leftColumn.style.height = (middleColumn.offsetHeight)+"px";
	 	}
	if((middleColumn.offsetHeight) > rightDivider.offsetHeight) {
		rightColumn.style.height = (middleColumn.offsetHeight)+"px";
	 	}
	if((middleColumn.offsetHeight) > leftDivider.offsetHeight) {
		leftDivider.style.height = (middleColumn.offsetHeight)+"px";
	 	}
	if((middleColumn.offsetHeight) > rightDivider.offsetHeight) {
		rightDivider.style.height = (middleColumn.offsetHeight)+"px";
	 	}
	}

function myVoid(){;};

function popup(url) {
 	
 	var width  = 500;
 	var height = 400;
 	var left   = (screen.width  - width)/2;
 	var top    = (screen.height - height)/2;
 	var params = 'width='+width+', height='+height;
 	
 	params += ', top='+top+', left='+left;
 	params += ', directories=no';
 	params += ', location=no';
 	params += ', menubar=no';
 	params += ', resizable=yes';
 	params += ', scrollbars=no';
 	params += ', status=no';
 	params += ', toolbar=no';
 	
 	newwin=window.open(url,'',params);
 
 	if (window.focus) {newwin.focus()}
 	return false;
	}