window.addEvent('domready', function(){

var elems = document.getElementsByTagName("td");
for (var i=0; i<elems.length; i++) {
    if (elems[i].id=="table_top_left")
        elems[i].innerHTML = "<img src='../images/table_top_left.gif'>";
    else if (elems[i].id=="table_top_right")
        elems[i].innerHTML = "<img src='../images/table_top_right.gif'>";
    else if (elems[i].id=="table_bottom_left")
        elems[i].innerHTML = "<img src='../images/table_bottom_left.gif'>";
    else if (elems[i].id=="table_bottom_right")
        elems[i].innerHTML = "<img src='../images/table_bottom_right.gif'>";
}     	
});