var target_img;  
 var default_src=""; 

 function doHoverIE(src, id) {
     target_img=document.getElementById(id);
     default_src=target_img.src; 
     target_img.src=src; 
}

 function doHover(e, id) {
     target_img=document.getElementById(id);
     default_src=target_img.src; 
     target_img.src=e.target.src; 
}

function restore() {
    target_img.src=default_src;
}  

function showImages() {
        var msg=document.getElementById('message'); 
        var images=document.getElementsByTagName('img'); 
	for(i = 0; i< images.length; i++){ 
		msg.innerHTML+=images[i].src + '<br>'
	}
        msg.innerHTML+="HUH?"; 
}