// JavaScript Document
<!--图片按比例缩放-->
var flag=false; 
function DrawImage(ImgD,iwidth,iheight){ 
 var image=new Image(); 
// var iwidth = 200;  //定义允许图片宽度 
// var iheight =200;  //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; 
  } 
  //ImgD.alt=image.width+"×"+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; 
  } 
  //ImgD.alt=image.width+"×"+image.height; 
  } 
 } 
} 
function change(id,p){
document.getElementById("imgid").href=id;
document.images['iface'].src=''+p;
}


function scroll(matq)
{temp=matq;
showpicture.scrollLeft=showpicture.scrollLeft+temp;
if (temp==0) return;
setTimeout("scroll(temp)",80);
}