replaceImgSrc

gistfile1.js

function replaceImgSrc(id){
	var imgs = document.getElementById(id).getElementsByTagName("img");

	for(var i=0;i<img.length;i++){
		imgs[i].src = qualifyURL(imgs[i].src);
	}
}
function qualifyURL(url){
    var img = document.createElement('img');
    img.src = url;
    url = img.src;
    img.removeAttribute("src");
    return url;
}

replaceSrc("data");