function popup(url, width, height){
	if(url=='undefined') { return false; }
	
	var w = width  || '800';
	var h = height || '400';
	
	props=window.open(url, 'poppage', 'toolbars=0, scrollbars=1, location=0, statusbars=0, menubars=0, resizable=1, width='+ w +', height='+ h +', left = 100, top = 100');
	
}