SetEnterCookie=function()
{
  var name="enterType",
        value="material",
        days=30,
        exp=new Date();
        exp.setTime(exp.getTime()+days*3600000*24);
  document.cookie=name+“=”+escape(value)+";expires="+exp.toGMTString();
}

DeleteEnterCookie=function()
{
    var name="enterType";
    document.cookie=name+“=;expires="+(new Date(0)).toGMTString();
}

searchClick=function()
{
  if(window.event.keyCode==13)
  { window.event.keyCode=0;
     window.event.returnValue=false;
     document.getElementById("a").click();
}