var imgSizer = {
    Config : {
        imgCache : []
    }
    ,
    collate : function(aScope) {
        var isOldIE = (document.all && !window.opera && !window.XDomainRequest) ? 1 : 0;
        if (isOldIE && document.getElementsByTagName) {
            var c = imgSizer;
            var imgCache = c.Config.imgCache;
            var images = (aScope && aScope.length) ? aScope : document.getElementsByTagName("img");
            for (var i = 0; i < images.length; i++) {
                images.origWidth = images.offsetWidth;
                images.origHeight = images.offsetHeight;
                imgCache.push(images);
                images.style.width = "100%";
            }
            if (imgCache.length) {
                c.resize(function() {
                    for (var i = 0; i < imgCache.length; i++) {
                        var ratio = (imgCache.offsetWidth / imgCache.origWidth);
                        imgCache.style.height = (imgCache.origHeight * ratio) + "px";
                    }
                });
            }
        }
    }
    // Ghettomodified version of Simon Willison's addLoadEvent() -- http://simonwillison.net/2004/May/26/addLoadEvent/
    ,
    resize : function(func) {
        var oldonresize = window.onresize;
        if (typeof window.onresize != 'function') {
            window.onresize = func;
        } else {
            window.onresize = function() {
                if (oldonresize) {
                    oldonresize();
                }
                func();
            }
        }
    }
}        
addLoadEvent(function() {
    imgSizer.collate();
});

function addLoadEvent(func) {
    var oldonload = window.onload;
    if (typeof window.onload != 'function') {
        window.onload = func;
    } else {
        window.onload = function() {
            if (oldonload) {
                oldonload();
            }
            func();
        }
    }
}