jsp页中的javascript,高手帮忙~

Question

<img src="images/xg.gif" onclick="textCounter(1)" name="file0" OnMouseDown="isimgact(this,0)" OnMouseUp="isimgact(this,1)" >      
<script>
var img0=new image();
img0.src="images/xg1.gif";
var img0=new image();
img0.src="images/xg.gif";
function isimgact(obj,act)
{
    if(act==1)
       this.src=img0.src;
    else
       this.src=img1.src;
}
</script>

Answer 1

to zkjbeyond(jigi):是改成这样吗,我加了几个输出试了下,在其他的jsp页调用这个页的时候,alert("1")这句执行了,alert("2")和alert("3")没有执行,,在japplet调用时这几句都没有执行
<script>
var img1=new image();
img1.src="images/xg1.gif";
var img0=new image();
img0.src="images/xg.gif";
function isimgact(obj,act)
{   alert("1")
    if(act==1)
         alert("2")
this.src=img0.src;
    else
         alert("3")
this.src=img1.src;
}
</script>