function $(id) 
{
	return document.getElementById(id);
}
//鼠标划上
    function obsidianMouseOver(obj)
    {
        var objID = obj; 
        $(obj).src = "Images/index/index_"+objID+"_2.gif";
    }
    
    //鼠标划出
    function obsidianMouseOut(obj)
    {
        var objID = obj;
        $(obj).src = "Images/index/index_"+objID+".gif";
    }
    
    //鼠标划上
    function obsidianMouseOverX(obj)
    {
        var objID = obj; 
        $(obj).src = "Images/Main/about_"+objID+"_2.gif";
    }
    
    //鼠标划出
    function obsidianMouseOutX(obj)
    {
        var objID = obj;
        $(obj).src = "Images/Main/about_"+objID+".gif";
    }