var popup = new Array();
function WindowOpen(file,name,x,y,features) {
	var pos_x = parseInt((screen.availWidth - x) / 2);
	var pos_y = parseInt((screen.availHeight - y) / 2);
	features = features.length ? features+"," : features;
	popup[name] = window.open(file, name, features+"width="+x+",height="+y+",left="+pos_x+",top="+pos_y);
	popup[name].moveTo(pos_x, pos_y);
	popup[name].focus();
}