function initPage()
{
	var inputs = document.getElementsByTagName("input");
	for (var i=0; i<inputs.length; i++)  {
		if (inputs[i].className.indexOf("submit") != -1 )  {
			inputs[i].onmouseover = function()
			{
			   this.src = this.src.replace(".gif", "-hover.gif");
			}
			inputs[i].onmouseout = function()
			{
				this.src = this.src.replace("-hover.gif", ".gif");
			}
		}
	}
}

if (window.addEventListener)
	window.addEventListener("load", initPage, false);
else if (window.attachEvent)
	window.attachEvent("onload", initPage);