var image;
var oldImageSrc_;

  	function changeImage(oldImageSrc, newImageSrc)
	{
 		image = window.event.srcElement;
		oldImageSrc_ = oldImageSrc;
		image.src=newImageSrc;
		window.setTimeout("changeBack(image, oldImageSrc_)",250);
	}

	function changeBack(image, oldImageSrc)
	{
		image.src=oldImageSrc;
	}