是所有图片的话var height=100;
var width=100;
var arrImg = document.getElementsByTagName("image");
for(var i=0;i<arrImg.length;i++)
{
arrImg[i].style.width=width;
arrImg[i].style.width=height;
}
var width=100;
var arrImg = document.getElementsByTagName("image");
for(var i=0;i<arrImg.length;i++)
{
arrImg[i].style.width=width;
arrImg[i].style.width=height;
}
{
//var defaultOptions = {}
// Object.extend(options || {}, defaultOptions);
if(!options) options = {};
var W = obj.offsetWidth;
var H = obj.offsetHeight;
var tWidth = options.width || 100;
var tHeight = options.height || 92;
if(W > tWidth)
{
var P = H / W;
obj.style.width = tWidth;
obj.style.height = P * tWidth;
}
if(H > tHeight)
{
var P = W / H;
obj.style.height = tHeight;
obj.style.width = P * tHeight;
}
}
img:要缩放的图片
width:最大宽度,
height: 最大高度