var homeON       = '/images/home-o.gif';
var homeOFF      = '/images/home.gif';
var servicesON   = '/services/assets/services-o.gif';
var servicesOFF  = '/services/assets/services.gif';
var founderON    = '/founder/assets/founder-o.gif';
var founderOFF   = '/founder/assets/founder.gif';
var contactON    = '/contact/assets/contact-o.gif';
var contactOFF   = '/contact/assets/contact.gif';


function preLoadImages(){
    if(document.images){
        img1ON = new Image();
        img1ON.src = homeON;
        img2ON = new Image();
        img2ON.src = servicesON;
        img3ON = new Image();
        img3ON.src = founderON;
        img4ON = new Image();
        img4ON.src = contactON;
    }
}


function imgRestore(img){
    if(document.images){    
        document[img].src = eval(img + "OFF");
        return true;  
    }
}


function imgSwap(img){
    if(document.images){
		//alert( eval(img + "OFF") );
        document[img].src = eval(img + "ON");
        return true;
    }
}