function gup( name ){
name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
var regexS = "[\\?&]"+name+"=([^&#]*)";
var regex = new RegExp( regexS );
var results = regex.exec( window.location.href );
if( results == null )
return false;
else
return results[1];
}

function divSize (){
viewportwidth = Math.round($(document).width()*0.50);
viewportheight = Math.round($('.center').height()*.97);
 
if (gup('h') != viewportheight || gup('w') != viewportwidth)
	document.location = "index.php" + "?w="+viewportwidth + "&h="+viewportheight;  
}


var delay = (function(){
  var timer = 0;
  return function(callback, ms){
    clearTimeout (timer);
    timer = setTimeout(callback, ms);
  };
})();


$(document).ready(function(){
divSize();	
});

$(window).resize(function() {
delay(function(){
divSize();	
}, 500);
});