function ResolutionCheck() {
	if (screen.height != 768) {
		 if(document.layers)	   //NN4+
   		 {
       document.layers["Res"].visibility = "show";
    }
    else if(document.getElementById)	  //gecko(NN6) + IE 5+
    {
        var obj = document.getElementById("Res");
        obj.style.visibility = "visible";
    }
    else if(document.all)	// IE 4
    {
        document.all["Res"].style.visibility = "visible";
    }

	}
}