function changeImage(imgName, imgSrc){
 document.images[imgName].src = imgSrc.src;
}

n_topmenu = new Image(); 
n_topmenu.src = "images/s_topmenu.gif";
s_topmenu = new Image(); 
s_topmenu.src = "images/s_topmenu.gif";


function ShowTSLS()
{

 window.open("home_tsls.asp","ShowTSLS","toolbars=0,manubar=0,scrollbars=1,directories=0,location=0,resizable=1,width=300,height=200,left=250,top=70");
}