弹出pupup画面后，锁住父画面

common.js

/**
 * 父画面锁定
 */
function lockParentWindow(){
	var win = window.opener;
	if (win) {
		if (win.document.getElementById("mask")){
			win.document.getElementById("mask").style.display = "";
		}
	}
}

/**
 * 父画面解锁
 */
function unlockParentWindow(){
	var win = window.opener;
	if (win){
		if (win.document.getElementById("mask")){
			win.document.getElementById("mask").style.display = "none";
		}
	}
}


在父画面的html中，加入以下代码，

<div id="mask" style="position:absolute;z-index:100;width:100%;height:100%;background-color:black;filter:alpha(opacity=25);-moz-opacity:0.25;opacity:0.25;display:none;">
	<iframe src="javascript:false" style="position:absolute;width:100%;height:100%;background-color:black;filter:alpha(opacity=0);-moz-opacity:0.0;opacity:0.0;"></iframe>
</div>

父画面和子画面加入 load,unload事件
<script type="text/javascript">
 window.onload = function(){
	lockParentWindow();
	
  }
  window.onunload = function(){
	unlockParentWindow();
  }
</script>