<script language="javascript">

function Testlink(){
//var alink=document.getElementsByTagName("A")[0].href;
var alink=document.getElementsByTagName("A");

for (i=0;i<alink.length;i++){
alink[i].setAttribute("class", " ");
alink[i].setAttribute("className", " ");
}
window.event.srcElement.setAttribute("class", "Selecta");
window.event.srcElement.setAttribute("className", "Selecta");  //for IE


}

function Setonclick(){
var alink=document.getElementsByTagName("A");
    for (i=0;i<alink.length;i++){
    //alert(i)    
    alink[i].onclick=Testlink;// 這個函式名不能帶() 即Testlink();    

}
}

</script>