function ImgW(ImgID,Width){
var obj = document.getElementById(ImgID);
if(obj != null)
{
var w = obj.width;
var h = obj.height; if (w > Width){
obj.width = Width;
obj.height = h*Width/w;
}
}
};
ImgW("aa" ,"365");
var obj = document.getElementById(ImgID);
if(obj != null)
{
var w = obj.width;
var h = obj.height; if (w > Width){
obj.width = Width;
obj.height = h*Width/w;
}
}
};
ImgW("aa" ,"365");
var obj = document.getElementById(ImgID);
if(obj != null)
{
var w = obj.width;
var h = obj.height; if (w > Width){
obj.width = Width;
obj.height = h*Width/w;
}
}
};
ImgW("aa" ,"365");
不过如果考虑执行顺序,应该function ImgW(ImgID,Width){
var obj = document.getElementById(ImgID);
if(obj != null)
{
var w = obj.width;
var h = obj.height; if (w > Width){
obj.width = Width;
obj.height = h*Width/w;
}
}
};
window.onload=function()
{
ImgW("aa" ,"365");
}
http://topic.csdn.net/u/20080201/14/0d78f8a2-37ff-48e1-a591-c404f3731c00.html