// JavaScript Document
  var   flag=false;     
  function   DrawImage(ImgD){     
    var   image=new   Image();     
    var   iwidth   =   110;     //定义允许图片宽度     
    var   iheight   =   135;     //定义允许图片高度     
    image.src=ImgD.src;     
    if(image.width>0   &&   image.height>0){     
    flag=true;     
    if(image.width/image.height>=   iwidth/iheight){     
      if(image.width>iwidth){         
      ImgD.width=iwidth;     
      ImgD.height=(image.height*iwidth)/image.width;     
      }else{     
      ImgD.width=image.width;         
      ImgD.height=image.height;     
      }     
   
      }     
    else{     
      if(image.height>iheight){         
      ImgD.height=iheight;     
      ImgD.width=(image.width*iheight)/image.height;         
      }else{     
      ImgD.width=image.width;         
      ImgD.height=image.height;     
      }     
 
      }     
    }     
  }        
  function   DrawImage2(ImgD,w,h){     
    var   image=new   Image();     
    var   iwidth   =   w;     //定义允许图片宽度     
    var   iheight   =   h;     //定义允许图片高度     
    image.src=ImgD.src;     
    if(image.width>0   &&   image.height>0){     
    flag=true;     
    if(image.width/image.height>=   iwidth/iheight){     
      if(image.width>iwidth){         
      ImgD.width=iwidth;     
      ImgD.height=(image.height*iwidth)/image.width;     
      }else{     
      ImgD.width=image.width;         
      ImgD.height=image.height;     
      }     
   
      }     
    else{     
      if(image.height>iheight){         
      ImgD.height=iheight;     
      ImgD.width=(image.width*iheight)/image.height;         
      }else{     
      ImgD.width=image.width;         
      ImgD.height=image.height;     
      }     
  
      }     
    }     
  }       
  function SetImgStatu(imgID){
var img1=document.getElementById("img"+imgID);
var imgsrc=img1.src.toLowerCase();
var simgext=imgsrc.substring(imgsrc.length-3,imgsrc.length);

switch (simgext)

{
	case "jpg":
	
break
	case "png":
	 
break
	case "bmp":
	
break
	case "gif":
	
break

default:
document.getElementById("imgD"+imgID).style.display="none";
}

}