function BlurObj(){//让特定标签的对象不可以聚焦
TypeNo=new Array("IMG","A","BUTTON");
for(i=0;i<TypeNo.length;i++){
    var AList=document.all.tags(TypeNo[i]);
        for(j=0;j<AList.length;j++){
            AList[j].attachEvent("onfocus",AList[j].blur);
            }
    }
}
window.onload=BlurObj;