function openwin(winame,file,height,width){
		
	if (!window.pop){		
		pop=window.open(file,winame,"status=no,scrollbars=yes,toolbar=no,location=no,menu=no,resizable=no,width="+width+",height="+height);		
		
	} else {
		pop.close();
		pop=window.open(file,winame,"status=no,scrollbars=yes,toolbar=no,location=no,menu=no,resizable=no,width="+width+",height="+height);
	}
}