var xmlHttp = new XMLHttpRequest();
xmlHttp.open("GET", "http://www.wretch.cc/album/show.php?i=x9079&b=53&f=1188967273&p=1&sp=0", false);
xmlHttp.send(null);
var parser = new DOMParser();
var doc=parser.parseFromString(xmlHttp.responseText,"text/html");
window.open(doc.querySelector("#DisplayImage").src);
DOMParser - MDN
