function changeon(i) {
    var color = '#C9DCDF';
    if (document.layers)
        window.document.layers[i].bgColor = color;
    else if (document.all)
        window.document.all[i].style.background = color;
}
function changeoff(i) {
    var color = '#C0C0C0';
    if (document.layers)
        window.document.layers[i].bgColor = color;
    else if (document.all)
        window.document.all[i].style.background = color;
}

/*
Submit Once form validation- 
© Dynamic Drive (www.dynamicdrive.com)
For full source code, usage terms, and 100's more DHTML scripts, visit http://dynamicdrive.com
*/

function submitonce(theform){
//if IE 4+ or NS 6+
if (document.all||document.getElementById){
//screen thru every element in the form, and hunt down "submit" and "reset"
for (i=0;i<theform.length;i++){
var tempobj=theform.elements[i]
if(tempobj.type.toLowerCase()=="submit"||tempobj.type.toLowerCase()=="reset")
//disable em
tempobj.value="Sending. Please wait..."
tempobj.disabled=true
}
}
}