aspx页面放一图片为背景（background），要求该图片以拉伸的方式（即页面多大底多大）铺底。另外，要想周一至周日每天换一幅图片又怎么实

如题！

解决方案 »

  1.   

    使用javascript脚本(参考以下代码)
    <SCRIPT language=JavaScript>
    function myFun(){    
       var d = new Date();   
             switch (d.getDay()) {      
               case 0:   strImg="1.gif";   
                    break;   
               case 1:   strImg="2.gif";   
                    break;      
               case 2:   strImg="3.gif";   
                    break;   
               case 3:   strImg="4.gif";   
                    break;   
                        case 4:   strImg="5.gif";   
                           break;   
                      case 5:   strImg="6.gif";   
                            break;   
                      case 6:   strImg="7.gif";   
                            break;       
                    } 
                    document.getElementById("img").src=strImg;  
                    
    }
    </script></head>
    <body>
    <img id=img >
    <input type=button name=but value=GetImage onClick=myFun()></body>
      

  2.   

    //在后台这个函数
    //*****声明一个共公变量
    public string BackGorundImageColor()
    {
        string strImage=""; //****获取图片路径
    string strImagePath=""; strImagePath=ResolveUrl("Images/");
               
    if(DateTime.Now.DayOfWeek==DayOfWeek.Monday)
    {
       strImage=strImagePath+"Monday.gif";
    } if(DateTime.Now.DayOfWeek==DayOfWeek.Tuesday)
    {
       strImage=strImagePath+"Tuesday.gif";
    } if(DateTime.Now.DayOfWeek==DayOfWeek.Wednesday)
    {
       strImage=strImagePath+"Wednesday.gif";
    }

    if(DateTime.Now.DayOfWeek==DayOfWeek.Thursday)
    {
       strImage=strImagePath+"Thursday.gif"; 
    } if(DateTime.Now.DayOfWeek==DayOfWeek.Friday)
    {
       strImage="Friday.gif";
    }

    if(DateTime.Now.DayOfWeek==DayOfWeek.Saturday)
    {
      strImage=strImagePath+"Saturday.gif";
    } if(DateTime.Now.DayOfWeek==DayOfWeek.Sunday)
    {
      strImage=strImagePath+"Sunday.gif";
    } return strImage.ToString();
    }
    //****前台调用<body  background="<%=BackGorundImageColor()%></body>