function ImageRollOver(targetID, imageOver, imageOut)
{
var image_out_obj = new Image();
image_out_obj.src = imageOut;
var image_over_obj = new Image();
image_over_obj.src = imageOver;
var target = document.getElementById(targetID);
target.src = image_out_obj.src;
function ImageOut(){this.src = image_out_obj.src;}
function ImageOver(){this.src = image_over_obj.src;}
this.ImageOut  = ImageOut;
this.ImageOver = ImageOver;
target.onmouseover = this.ImageOver;
target.onmouseout  = this.ImageOut;
target.style.cursor = 'pointer';
}