function openWindow(url,var_width,var_height) {
     
              agent = navigator.userAgent;
              windowName = "Console";
     
              params = "";
              params += "toolbar=0,";
              params += "location=0,";
              params += "directories=0,";
              params += "status=0,";
              params += "menubar=0,";
              params += "scrollbars=1,";
              params += "resizable=0,";
              params += "width=";
			  params += var_width;
              params += ",height=";
			  params += var_height;
           
              win = window.open(url, windowName , params);
                  if (agent.indexOf("Mozilla/2") != -1 && 
     agent.indexOf("Win") == -1) {
                          win = window.open(url, windowName , params);
                  }
     
              if (win.opener == null) {
                          win.opener = window;
              }
          }