function focusInput(focusClass, normalClass)
  {
  	 var elements = document.getElementsByTagName("input");
  	 for (var i=0; i < elements.length; i++)
  	 {
  	 	if (elements[i].type != "button" && elements[i].type != "submit" && elements[i].type != "reset")
  	 	{
  	 			elements[i].value = "";
  	 		  //elements[i].onfocus = function() {  /*this.className = focusClass;*/ elements[i].value = "";};
  	 		  //elements[i].onblur = function()  { /*this.className = normalClass||''; */elements[i].value = "搜索";};
  	 	}
  	 }
  }
 function  getCountDownNum(num_pos)
 {
 	    var timedate= new Date("June 22,2010");
	　　var now = new Date();
	　　var date = timedate.getTime() - now.getTime();
	　　var time = Math.floor(date / (1000 * 60 * 60 * 24));
			var hunderd, tens , uint;
	    hunderd = Math.floor(time/100);
			tens = Math.floor((time - hunderd * 100)/10);
			uint = Math.floor((time - hunderd * 100 - tens * 10 ));

		if (time >= 0)
			{
				 		if(num_pos == "hunderd")
						{

							document.write(hunderd);
						}else if(num_pos == "tens")
						{
							document.write(tens);
						}if(num_pos == "uint")
						{
							document.write(uint);
						}
			}else
				document.write("0");

 }
   

  function displaySubMenu(li) {
      var subMenu = li.getElementsByTagName("ul")[0];
      subMenu.style.visibility = "visible";
  }
  function hideSubMenu(li) {
      var subMenu = li.getElementsByTagName("ul")[0];
      subMenu.style.visibility = "hidden";
  }