if (!window.SRAX) SRAX = {};


(function($){

  $.extend = function(dest, src, skipexist){
      var overwrite = !skipexist; 
      for (var i in src) 
          if (overwrite || !dest.hasOwnProperty(i)) dest[i] = src[i];
      return dest;
  }
    
  $.extend($, {
      addTo : function(html){
          var x = document.body;
          var div = document.createElement('div');        
          div.innerHTML = html.join('');    
          while (div.childNodes.length > 0) x.appendChild(div.childNodes[0]);
          return x;
      },
      
      remove : function(el){
          el.parentNode.removeChild(el)
      },
  
      genId : function(){
        return 'genid_' + ($.lastGenId ? ++$.lastGenId : $.lastGenId=1);
      }
  })
 
  var style = 'style="display:none;position:absolute;left:-1000px;top:-1000px"';
  function iframe(id){
    return '<iframe style="display:none" onload="SRAX.XSS.onload(this)" src="javascript:true" id="'+id+'" name="'+id+'" '+style+'></iframe>';
  }
  var finish = {};
  $.extend($, {
      XSS : {
          onload : function(iframe){
              var window = iframe.contentWindow;
              try{
                  if (!iframe.xss && window.location == 'about:blank') return;
              } catch (ex){}
              if (iframe.xss) return $.XSS.getData(iframe);                  
              if (!iframe.xss) window.location = 'about:blank';
              iframe.xss = 1;
          },
          getData : function(iframe){
              var func = finish[iframe.id];
              if (func) func(iframe.contentWindow.name); 
              //timeout for stop the wait cursor in FF  
              setTimeout(function(){$.remove(iframe)}, 0)
              return;
          },
          post : function(url, data, callback){
              var id = $.genId();
              finish[id] = callback;
              var html = [iframe(id), '<form method="post" action="'+url+'" target="'+id+'" '+style+'>'];
              for (var i = 0, arr = data.split('&'), l = arr.length; i < l; i++){
                  var val = arr[i].split('=');
                  html.push('<input name="'+val[0]+'" value="'+val[1]+'"/>');
              }
              html.push('</form>');
              var form = $.addTo(html).lastChild;
              form.submit();
              $.remove(form);
          } 
      }
  })
})(SRAX);