兄弟,你应该在<img onload="resizeImage(this,100,100)">里做些小动作……/*图片自适应*/
function resizeImage(source,maxwidth,maxheight)
{
    var width=source.width;
    var height=source.height;
    var scale=Math.max(width/maxwidth,height/maxheight);
    if(scale>1)
        source.width=width/scale;
}@_@