///自动调整图片大小
<script language=javascript>
function propersize(obj,width,height)
{
var width1=obj.width;
var height1=obj.height;
var width2=width;
var height2=height;
var h=height1/height2;
var w=width1/width2;
if(h>w)
{
obj.height=height2;
obj.width=width1*height2/height1;
}
else
{
obj.width=width2;
obj.height=height1*width2/width1;
}
}
</script>
