function popUp(file,w,h){
	var PopLeft = (window.screen.width-w)/2;
	var PopTop = (window.screen.height-h)/2;
	height=parseInt(h);
	width=parseInt(w);
	nuevawin = window.open(file, 'new','width=' + width + ',height=' + height + ',top=0,left=0,scrollbars=yes,resizable=no,toolbar=no,menu=no,top='+PopTop+',left='+PopLeft); //+ ', topmargin=0, leftmargin=0, rightmargin=0, bottommargin=0, marginheight=0, marginwidth=0);
}