<script language="javascript" type="text/jscript">
function showhide(layer_ref) {
obj = document.getElementById(layer_ref);
if (obj.style.display == "none") {
obj.style.display = "";
} else {
obj.style.display = "none";
}
}
function changepic_menu(arrow) {
obj = document.getElementById(arrow);
if (obj.src.indexOf("arrow_up.jpg") > 0) {
obj.src = "../image/arrow_down.jpg";
} else {
obj.src = "../image/arrow_up.jpg";
}
}
</script>
this code is running on ie but not on firfox plz help me