Auto lazy load of data-src images

datasrc.js

;(function(w,d){

var fn=function(){
	var body = d.body || d.getElementsByTagName('body')[0];
	if(d.querySelectorAll)
		var allimgs = d.querySelectorAll('img[data-src]'), allimgs_len = allimgs.length;
		for(var i=0;i<allimgs_len;i++){
			allimgs[i].setAttribute('src', allimgs[i].getAttribute('data-src'));
		}
}


if(w.addEventListener)
	w.addEventListener('load', fn, false);
else w.attachEvent('onload',   fn);


})(window, document);

datasrc.min.js

!function(t,e){var a=function(){e.body||e.getElementsByTagName("body")[0];if(e.querySelectorAll)var t=e.querySelectorAll("img[data-src]"),a=t.length;for(var r=0;a>r;r++)t[r].setAttribute("src",t[r].getAttribute("data-src"))};t.addEventListener?t.addEventListener("load",a,!1):t.attachEvent("onload",a)}(window,document);