//图片自适应大小
//id为img控件的id
//width与height为img父控件的宽高——即img的最大宽高
//示例：<img id="dd" src="ee.jpg" onload="imgFit(''dd'',100,200)" />"
function imgFit(id,width,height)
...{
    var imageArr=document.getElementById(id);
    if(imageArr.offsetWidth>width || imageArr.offsetHeight>height)
    ...{
        imageRate1=parseInt(imageArr.offsetWidth)/width;
        imageRate2=parseInt(imageArr.offsetHeight)/height;
        if(imageRate2>imageRate1)
            imageArr.style.height = imageArr.offsetHeight/imageRate2+"px";
        else
            imageArr.style.width = imageArr.offsetWidth/imageRate1 +"px";
    }
}

该文章在 2010/8/18 11:57:51 编辑过