// Place your application-specific JavaScript functions and classes here
// This file is automatically included by javascript_include_tag :defaults
//去掉前后空格
  function ChkUtiltrim(str) {
      var patrn = /(^\s+|\s$)/g;
      return str.replace(patrn, "");
    }
 //隐藏显示DIV
  function showhidediv(divname){
        var obj = document.getElementById(divname)
        if (obj.style.display=='none')
        obj.style.display='block';
        else
        obj.style.display='none';
    }
     //提交课程内容时隐藏显示DIV
   function showhidecontentdiv(divname,divname1){
        var obj = document.getElementById(divname)
        var obj1 = document.getElementById(divname1)
        if (obj.style.display=='none')
        {obj.style.display='block';
        obj1.style.display='none';}
        else
        {obj.style.display='none';
        obj1.style.display='block';}
    }