var Pic = new Array
Pic[00] = 'images/homebtn.gif'
Pic[01] = 'images/homebtnh.gif'
Pic[02] = 'images/aboutusbtn.gif'
Pic[03] = 'images/aboutusbtnh.gif'
Pic[04] = 'images/servicesbtn.gif'
Pic[05] = 'images/servicesbtnh.gif'
Pic[06] = 'images/productsbtn.gif'
Pic[07] = 'images/productsbtnh.gif'
Pic[11] = 'images/homettl.gif'
Pic[12] = 'images/homettlh.gif'
Pic[13] = 'images/aboutusttl.gif'
Pic[14] = 'images/aboutusttlh.gif'
Pic[15] = 'images/servicesttl.gif'
Pic[16] = 'images/servicesttlh.gif'
Pic[17] = 'images/productsttl.gif'
Pic[18] = 'images/productsttlh.gif'
var p = Pic.length
var preLoad = new Array()
var i = 0;
for (i = 0; i < p; i++){
     preLoad[i] = new Image()
     preLoad[i].src = Pic[i]
}
function switchImage(whichImage,imageNumber){
   document.images[whichImage].src = preLoad[imageNumber].src
}
//-->