function SetCookie(name,value)//两个参数，一个是cookie的名子，一个是值
{
    var Days = 1; //此 cookie 将被保存 30 天
    var exp  = new Date();    //new Date("December 31, 9998");
    exp.setTime(exp.getTime() + Days*24*60*60*1000);
    document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}
function getCookie(name)//取cookies函数        
{
    var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
     if(arr != null) return unescape(arr[2]); return null;

}
function delCookie(name)//删除cookie
{
    var exp = new Date();
    exp.setTime(exp.getTime() - 1);
    var cval=getCookie(name);
    if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();
}
function doZoom(obj_target,size){

document.getElementById(obj_target).style.fontSize=size+"px";

}
function DrawImage(ImgD,FitWidth,FitHeight){    
  var image=new Image();    
  image.src=ImgD.src; 
  
  if(image.width>0 && image.height>0){     
    flag=true;     
    if(image.width/image.height>= FitWidth/FitHeight){      
      if(image.width>FitWidth){        
        ImgD.width=FitWidth;      
	    ImgD.height=(image.height*FitWidth)/image.width;      
      }else{      
        ImgD.width=image.width;        
	    ImgD.height=image.height;      
      }      
      //ImgD.alt="点击图片放大("+image.width+"×"+image.height+")";      
    }else{      
      if(image.height>FitHeight){        
        ImgD.height=FitHeight;      
	    ImgD.width=(image.width*FitHeight)/image.height;          
      }else{      
        ImgD.width=image.width;        
	    ImgD.height=image.height;      
      }      
        //ImgD.alt="点击图片放大("+image.width+"×"+image.height+")";      
      }     
    } 
  } 错误: 无法读取页脚文件。