// JavaScript Document
function Popup(url,ancho,alto) { 
	derecha=(screen.width-ancho)/2;
	arriba=(screen.height-alto)/2;
	ww = window.open(url,"","width="+ancho+",height="+alto+",resizable,scrollbars=no,status=0, left="+derecha+", top="+arriba+"");
	if(!ww){
		alert("It seems you have blocked pop-ups windows.\nYou should allow pop-ups from 365chess.com to use this function");
	}
}