var win=null;
function Popup(url,w,h,pos){
	
	if(pos=="random"){LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
	if(pos=="center"){LeftPosition=(screen.width)?(screen.width-w)/2:100;TopPosition=(screen.height)?(screen.height-h)/2:100;}
	if(pos=="whole"){LeftPosition=0;TopPosition=0;w=screen.width;h=screen.height;}
	else if((pos!="center" && pos!="random" && pos!="whole") || pos==null){LeftPosition=0;TopPosition=20}
	
	settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars=no,location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
	
	win=window.open(url,'',settings);		
}