javascript:
	var rtRes = new Array( "640x480", "800x600", "1024x768", "1280x600", "1280x800", "1280x960", "1280x1024", "1440x900", "1600x1200", "1920x1080", "1920x1080", "1920x1200" );
	var rtsRes = "";
	var rtOvrly;
	var rtMnsj;

	for( var i=0; i < rtRes.length; i++ )
		rtsRes += '<a onMouseOver="this.style.borderColor=\'#3b99fb\'" onMouseOut="this.style.borderColor=\'#CCCCCC\'" style="border:1px solid #CCCCCC;color:#3B99FB;display:inline-block;line-height:50px;margin:0px 10px 10px 0px;text-align:center;text-decoration:none;width:100px;" href="javascript: void(0);" onclick="rtRTo( \'' + rtRes[i] + '\' );">' + rtRes[i] + '</a>';

	function rtRTo(rtsRes)
	{
		rtsRes = rtsRes.split( "x" );
		window.location = "javascript:window.resizeTo(" + rtsRes[0] + ", " + rtsRes[1] + "); window.moveTo(0,0)";

		rtHd();
	}

    var rtHd = function()
    {
        document.getElementsByTagName("body")[0].removeChild( rtMnsj );
        document.getElementsByTagName("body")[0].removeChild( rtOvrly );
    };

    function rtSh()
    {
        rtMnsj = document.createElement( "div" );
        rtMnsj.setAttribute( "id", "msje" );
		rtMnsj.style.cssText = "background-color: #efefef; width: 340px; height: 295px; padding: 20px 10px 20px 20px; border: 2px solid #3b99fb; z-index: 999; position: fixed; top: 50%; left: 50%; margin-left: -192px; margin-top: -170px; font-size: 12px; color: #3b99fb; font-family: arial,sans-serif;";
        rtMnsj.innerHTML = '<div style="font-size:14px;color:#000000;font-weight:bold;margin-bottom:25px;">Cambiar tamaņo de la ventana a:</div>' + rtsRes;

        rtOvrly = document.createElement( "div" );
        rtOvrly.setAttribute( "id", "ovrl" );
        rtOvrly.style.backgroundColor = "#000000";
        rtOvrly.style.opacity = "0.3";
		rtOvrly.style.filter="alpha(opacity='30')";
        rtOvrly.style.zIndex = "998";
        rtOvrly.style.width = "100%";
        rtOvrly.style.height = "100%";
        rtOvrly.style.position = "fixed";
        rtOvrly.style.top = "0px";
        rtOvrly.style.left = "0px";
		rtOvrly.onclick = rtHd;

        document.getElementsByTagName("body")[0].appendChild( rtMnsj );
        document.getElementsByTagName("body")[0].appendChild( rtOvrly );
    }

	rtSh();

	void( null );