<script>
var imgs=0;
function showmenu(){
if(imgs==0){
imgs=1;
for(var i=0; total=document.images.length,i<total; i++){
document.getElementsByTagName("img")[i].oldsrc=document.getElementsByTagName("img")[i].src;
document.getElementsByTagName("img")[i].width=document.getElementsByTagName("img")[i].width;
document.getElementsByTagName("img")[i].height=document.getElementsByTagName("img")[i].height;
document.getElementsByTagName("img")[i].src="http://images.yoka.com/pic/index/2008/1209/U15P1T46D827F728DT20081209153649.jpg";
}
}else{
imgs=0;
for(var i=0; total=document.images.length,i<total; i++){
document.getElementsByTagName("img")[i].src=document.getElementsByTagName("img")[i].oldsrc;
}
}
}
</script>
<span style="cursor:pointer;" οnclick="showmenu()">替换</span>