String.prototype.isArgument=function()
{
    return /^([a-zA-Z]){1,}=([0-9]){1,}$/.test(this);
}


/*
call this function just work like window.open(url,name,feature);
however, for IE5.0+, it will open a showModelessDialog window;
and For Gecko(Mozilla or Netscape), the child window will stay on top focus untill user close it.
programmed by hedger
hedger@yahoo-inc.com
*/


function dialog(url,name,feature,isModal)
{
 if(url==null){return false;}
 url = url
 if(name==null){name=""}
 if(feature==null){feature=""};
 if(window.showModelessDialog)
 {
      var WindowFeature = new Object();
    WindowFeature["width"] = 400;
    WindowFeature["height"]  =400;
    WindowFeature["left"]  = "";
    WindowFeature["top"]  =  "";
    WindowFeature["resizable"]  = "";

    if(feature !=null && feature!="")
    {
      feature = ( feature.toLowerCase()).split(",");

      for(var i=0;i< feature.length;i++)
        {
          if( feature[i].isArgument())
            {
               var featureName = feature[i].split("=")[0];
               var featureValue = feature[i].split("=")[1];

               if(WindowFeature[featureName]!=null){WindowFeature[featureName] = featureValue; }
            }
        }
    }

  if(WindowFeature["resizable"]==1 || WindowFeature["resizable"]=="1" || WindowFeature["resizable"].toString().toLowerCase()=="yes"){WindowFeature["resizable"] = "resizable:1;minimize:1;maximize:1;"}
  if(WindowFeature["left"]!=""){WindowFeature["left"] ="dialogLeft:" +  WindowFeature["left"] +"px;";}
  if(WindowFeature["top"]!=""){WindowFeature["top"] ="dialogTop:" +  WindowFeature["Top"] +"px;"; }
  if(window.ModelessDialog ==null){window.ModelessDialog = new Object() ; };
  if(name!="")
  {
   if(window.ModelessDialog[name]!=null && !window.ModelessDialog[name].closed )
   {
     window.ModelessDialog[name].focus();
     return window.ModelessDialog[name];
   }
  }
    var F = WindowFeature["left"] +WindowFeature["top"] +  "dialogWidth:"+WindowFeature["width"] +" px;dialogHeight:"+WindowFeature["height"]+"px;center:1;help:0;" + WindowFeature["resizable"] +"status:0;unadorned:0;edge: raised; ;border:thick;"
    if(isModal)
    {
        window.showModalDialog(url,self,F);
        return false;
    }
    else
    {
        window.ModelessDialog[name] = window.showModelessDialog(url,self,F);
        return window.ModelessDialog[name];
    }
 }
 else
 {
   if(document.getBoxObjectFor)
   {


     if(isModal)
     {
         var Modal = window.open(url,name,"modal=1," + feature);
         var ModalFocus = function()
         {
            if(!Modal.closed){Modal.focus();}
            else{Modal =null;window.removeEventListener(ModalFocus,"focus");ModalFocus = null; };
         }
         window.addEventListener( "focus",ModalFocus, false );
         return false;
     }
     else
     {
        return window.open(url,name,"modal=1," + feature);
     }
   }
   else
   {
     return window.open(url,name,feature);
   }
   //
 }
 return null;
}




function modal(url,feature)
{
    dialog(url,"",feature,true);
    return false;
}