小疑点很

小问题很急
<a   href= "# "> <img   src= "images/topBtnSearch.gif "   border= "0 "   align= "absmiddle "   title= "Search "   onclick= "javascript:ClickSearchButton(0); "   /> </a>

<a   href= "# "> <img   src= "images/topBtnCancel.gif "   border= "0 "   align= "absmiddle "   title= "Cancel "   onclick= "javascript:ClickCancelButton(); "   /> </a>

在ClickSearchButton中如何Search按钮变灰，让Cancel按钮由灰变为可用

[解决办法]
如果改为是按扭的话
是不是这个函数的效果呢？
<script>
function ClickSearch(){
if((document.getElementById( "Search ").value)!= " "){
document.getElementById( "Search ").disabled= true;
document.getElementById( "Cancel ").disabled= false;
}
}
function ClickCancel(){
if((document.getElementById( "Cancel ").value)!= " "){
document.getElementById( "Search ").disabled= false;
document.getElementById( "Cancel ").disabled= true;
}
}
</script>
[解决办法]
<a href= "# "> <img id= "imgSearch " src= "images/topBtnSearch.gif " border= "0 " align= "absmiddle " title= "Search " onclick= "javascript:ClickSearchButton(0); " /> </a>

<a href= "# "> <img id= "imgCancel " src= "images/topBtnCancel.gif " border= "0 " align= "absmiddle " title= "Cancel " onclick= "javascript:ClickCancelButton(); " /> </a>

function ClickSearchButton()
{
document.getElementById( "imgSearch ").disabled = true;
document.getElementById( "imgCancel ").disabled = false;
}
[解决办法]
换图片就是设置src属性，不过没有什么意义啊？还是可以点击啊
下面是更换图片设置的函数，自己可以修改
function ClickSearchButton(Search){
document.getElementById( "Cancel ").setAttribute( "src ",Search.getAttribute( "href "));
}