$(document).ready(function(){
 $(".chat_pannel").click(function () {
  //$("#dialog").dialog({modal: true, height: 590, width: 1005 });
        var w = window.open("http://www.google.com", "popupWindow", ",resizable=false,width=400, height=500,titlebar=0,toolbar=0");
        $(this).hide();
    });
});