var NS = (navigator.appName.indexOf("Netscape") > -1 && navigator.appVersion.indexOf("4") > -1) ? true:false                 
var IE = (document.all) ? true:false
var nn6 = (document.getElementById && !document.all) ? true:false

var hideMenu = null;
function Hide(div){
if(IE)eval('document.all.'+div+'.style.visibility="hidden"');
if(NS)eval('document.layers.'+div+'.visibility="hidden"');
if(nn6)eval('document.getElementById("'+div+'").style.visibility = "hidden"');
}
function Show(div){
if(IE)	eval('document.all.'+div+'.style.visibility="visible"');
if(NS)	eval('document.layers.'+div+'.visibility="visible"');
if(nn6) eval('document.getElementById("'+div+'").style.visibility = "visible"');

}
function imgOn(Num) {
hideAll();
if (document.images) {
document.images["b" +Num].src = eval("b" +Num+ "on.src")
}
}
function imgOff(Num) {
if (document.images) {
document.images["b" +Num].src = eval("b" +Num+ ".src")
}
}

//MenuMouseOver
function mImgOn(divNum,Num) {
clearTimeout(hideMenu);
if (document.images) {
if(IE){
document.images["m" +divNum+ "b" +Num].src = eval("m" +divNum+ "b" +Num+ "on.src")
}
if(NS){
document.layers["m"+divNum].document.images["m" +divNum+ "b" +Num].src = eval("m" +divNum+ "b" +Num+ "on.src")
}
if(nn6){
document.images["m" +divNum+ "b" +Num].src = eval("m" +divNum+ "b" +Num+ "on.src")
}
}
}
function mImgOff(divNum,Num) {
if (document.images) {
if(IE){
document.images["m" +divNum+ "b" +Num].src = eval("m" +divNum+ "b" +Num+ ".src")
}
if(NS){
document.layers["m"+divNum].document.images["m" +divNum+ "b" +Num].src = eval("m" +divNum+ "b" +Num+ ".src")
}
if(nn6){
document.images["m" +divNum+ "b" +Num].src = eval("m" +divNum+ "b" +Num+ ".src")
}
}
hideMenu=setTimeout('hideAll()',500)
}

function hideAll(){
//if you add more menus you need to hide more here
Hide('m1');
Hide('m2');
Hide('m3');
Hide('m5');
}