Html的部分常用技巧

使用CSS替换图片
star:expression(
    onmouseover = function()
    {
        /*替换图片*/
        if(this.hover != null){
          this.name = this.src;
          this.src = this.src.replace('.jpg', '_over.jpg');
          this.HasChg = 1;
       }
   },
   onmouseout = function()
  {  
       /*还原本来的图片*/
     if(this.HasChg != null){
        this.src = this.name;
        this.HasChg = null;
    }
}