var img1_on = new Image(); 
var img2_on = new Image(); 
var img3_on = new Image(); 
var img4_on = new Image(); 

img1_on.src = "siteimages/site_02.jpg";
img2_on.src = "siteimages/site_04.jpg";
img3_on.src = "siteimages/site_06.jpg";
img4_on.src = "siteimages/site_08.jpg";

var img1_off = new Image(); 
var img2_off = new Image(); 
var img3_off = new Image(); 
var img4_off = new Image();  

img1_off.src = "siteimages/site_rollover_02.jpg";
img2_off.src = "siteimages/site_rollover_04.jpg";
img3_off.src = "siteimages/site_rollover_06.jpg";
img4_off.src = "siteimages/site_rollover_08.jpg";


//!!!!!!!!!!!!!!FUNCTION FOR ROLLOVER


function imgOn(imgName){
 if(document.images){
  document.images[imgName].src = eval(imgName + "_off.src");
}
}

function imgOff(imgName){
 if(document.images){
  document.images[imgName].src = eval(imgName + "_on.src");
}
}