function Wa_SetImgAutoSize(img) 
{ 
//var img=document.all.img1;
var MaxWidth=100;
var MaxHeight=110;
var HeightWidth=img.offsetHeight/img.offsetWidth;
var WidthHeight=img.offsetWidth/img.offsetHeight;
//alert(img.offsetHeight);
//if(img.offsetHeight>1) alert(img.offsetHeight);
if(img.readyState!="complete"){
 return false;
}  

if(img.offsetWidth>MaxWidth){ 
img.width=MaxWidth; 
img.height=MaxWidth*HeightWidth; 
} 
if(img.offsetHeight>MaxHeight){ 
img.height=MaxHeight; 
img.width=MaxHeight*WidthHeight; 
} 
}