var myWindow = null;

     function openWindow(pageHtml, widthPage, heightPage)
      {

        if(myWindow == null || myWindow.closed)
        {
        // open window centered
         var width = widthPage;
         var height = heightPage;
         var left = parseInt((screen.availWidth/2) - (width/2));
         var top = parseInt((screen.availHeight/2) - (height/2));
         var windowFeatures = "width=" + width + ",height=" + height + ",menubar=no,scrollbars=no,toolbar=no,status=no,close=no,left=" + left + ",top=" + top + "screenX=" + left + ",screenY=" + top;
         myWindow = window.open(pageHtml, "newCenteredWindow", windowFeatures);
        }
        else
        {
          myWindow.focus();
        }


      }


 // RollOver Images
   function changeImage(imgName,imgObjName)
   {

    if (document.images)
	 {
       document.images[imgName].src = eval(imgObjName + ".src");
     }
   }



    // Change Cottage photo and info
    function changeCottageInfo(imgName,imgObjName, CottageOptionInfo, CottageSquareInfo)
    {

    if (document.images)
	 {
	   document.images[imgName].src = eval(imgObjName + ".src");
       document.getElementById("CottagePlan").innerHTML = CottageOptionInfo;
       document.getElementById("CottageSquare").innerHTML = CottageSquareInfo;
      }
    }