var Focus = {

	staron: function(objImg) {
		if (objImg.src.indexOf("_on.gif") == -1) objImg.src = objImg.src.replace("_off.gif", "_on.gif");
	},

	staroff: function(objImg) {
		if (objImg.src.indexOf("_on.gif") > -1) objImg.src = objImg.src.replace("_on.gif", "_off.gif");
	}

}

if (document.images)
    {
      preload_image_object = new Image();
      // set image url
      image_url = new Array();
      image_url[1] = "img/kayit_on.gif";

       var i = 0;
       for(i=0; i<=2; i++) 
         preload_image_object.src = image_url[i];
}