function preloadRollovers() {

     // counter
     var i = 0;

     // create object
     image = new Image();

     // set image list
     images = new Array();
     images[0]="images/submitHover.png";
	 images[1]="images/emailHover.png";

     // start preloading
     for(i=0; i<images.length; i++) 
     {
          image.src=images[i];
		  document.write(images[i]);
     }
} 

body.onLoad = preloadRollovers();