if (document.images){
// main nav rollovers
 who_we_are_on = new Image(); who_we_are_on.src = "images/buttons/who_we_are_on.gif";
 who_we_are_off = new Image(); who_we_are_off.src = "images/buttons/who_we_are_off.gif";
 what_we_do_on = new Image(); what_we_do_on.src = "images/buttons/what_we_do_on.gif";
 what_we_do_off = new Image(); what_we_do_off.src = "images/buttons/what_we_do_off.gif";
 our_clients_on = new Image(); our_clients_on.src = "images/buttons/our_clients_on.gif";
 our_clients_off = new Image(); our_clients_off.src = "images/buttons/our_clients_off.gif";
 news_on = new Image(); news_on.src = "images/buttons/news_on.gif";
 news_off = new Image(); news_off.src = "images/buttons/news_off.gif";
 join_us_on = new Image(); join_us_on.src = "images/buttons/join_us_on.gif";
 join_us_off = new Image(); join_us_off.src = "images/buttons/join_us_off.gif";
 contact_us_on = new Image(); contact_us_on.src = "images/buttons/contact_us_on.gif";
 contact_us_off = new Image(); contact_us_off.src = "images/buttons/contact_us_off.gif";
 home_on = new Image(); home_on.src = "images/buttons/home_on.gif";
 home_off = new Image(); home_off.src = "images/buttons/home_off.gif";
}

function HiLight(imgDocID,imgObjName) {
 if (document.images){
 document.images[imgDocID].src = eval(imgObjName + ".src")
 }
}