function fireFocus(path,width,height){
  var FocusBtn = document.getElementById("FocusBtn");
  FocusBtn.alt = path+"&width="+width+"&height="+height+"&TB_iframe=true";
  if (!/*@cc_on!@*/0) {    //Firefox2、Firefox3、Safari3.1+、Opera9.6+ support      
	var evt = document.createEvent("MouseEvents");   
    evt.initEvent("click",true,true);   
    FocusBtn.dispatchEvent(evt);
  }else{    //IE6、IE7 support
    FocusBtn.click();
  }
}