window.open () / pop up a new window , url parameter passing can not get the problem ! ! !

Depressed ~ ~ ~ old depressed ! There is an edit page , pop-up window with the realization editing, editing between the need to pass parameters to the background to the database values:
just the beginning , use OpenDialog modal dialog box pops up , so take the URL parameter in the background , there is no problem . However, in the pop-up edit page , there is a pop-up window for adding ( like , add type kind of thing ), Ajax way to add complete, close the Add page , you need to refresh the current edit page. Therefore, the use OpenDialog way refresh function can not be completed , then replaced the open. But the use of the open method pop-up form , the background to get any URL parameters .
list page, open the code :

  function OpenWindowsHzw(FileName, OpenW, OpenH) {
  			var w, h, str;
  			w = (window.screen.availWidth - 27) / 2 - OpenW / 2;
  			h = (window.screen.availHeight - 8) / 2 - OpenH / 2;
  			str = "width=" + OpenW + ",height=" + OpenH + ",top=" + h + ",left=" + w
  					+ ",resizable=0,scrollbars=yes";
  			var newWin = window.open(FileName, "window", str);
  			newWin.focus();
  		}
  
  function doEdit() {
  			var id = $("#hiddenid").val();
  			if (null == id || "" == id) {
  				return alert('请选择会议室!');
  			}
  			var str = "<%=path%>/platform/meetresedit!getMeetById.action?meetResId=" + id;
  			alert(str);
  			OpenWindowsHzw(str,550,400);
  			window.location.reload();
  		}
  

submitted to the Action after the Action supplied meetResId value : null ( But sometimes , they can get ) :

                    String meId = null;
  		try {
                             //这种方式也是鸟的
                             Object obj = ActionContext.getContext().get("meetResId");
                             //有时候、跑到这一句的时候、报空指针异常
  			meId = request.getParameter("meetResId");
  		} catch (Exception e) {
  			e.printStackTrace();
  		}
  

Debug in ten million times , there will be one or two then broke character , made ​​to its value.

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you first take a look reload
------ Solution ---------------------- ----------------------
modal boxes exist in the cache , so the use of pop-up modal dialog OpenDialog when attention after the headband parameters , such as:
var now = new Date ();
var url = 'Xxxxxx? a =' + '& now' + now.getTime ();
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is this damn thing ~ ~ ~ Y refresh it , I fail to get the value of the Request !
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View
I want to use this method, the action request to return the page is displayed in the pop-up form, I want to ask how the onclick should write ah ? Please Gaoshoubangbangmang ah , urgent ! ! ! !

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him jump over , Firefox should be, Google will not work