js 左键点击页面时显示“您好”，右键点击时显示“禁止右键”。并在2分钟后自动关闭页面。

<form id="form1">
<iframe style="display:none" name="ifm0">
</form>

<script>
function document.oncontextmenu(){event.returnValue=false;}
function click(){
 if(event.button==2){
   newpage=ifm0.showModelessDialog("javascript:alert('您好，现在点击了右键');window.close();","","status:no;resizable:no;help:no;dialogHeight:30px;dialogWidth:40px;");
setTimeout("ifm0.location.reload();",2000);
  }
  if(event.button==1){
   newpage=ifm0.showModelessDialog("javascript:alert('您好，您点击了左键');","","status:no;resizable:no;help:no;dialogHeight:30px; dialogWidth:40px;");
setTimeout("ifm0.location.reload()",2000);
}

}
document.onmousedown=click;
</script>