function onExternalLinkActivate() {
  window.open(this.href);
  return false;
}


function initLinks() {
  for (i in document.links) {
    var link = document.links[i];
    if (link.rel && link.rel.indexOf('external')!=-1) {
      link.onclick = onExternalLinkActivate;
      link.onkeypress = onExternalLinkActivate;
    }
  }
}


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


function ShowOrigGalImage () {
  var dasimg = document.getElementById("mainimage");
	var origbutton = document.getElementById("showorigbutton");
	var postbutton = document.getElementById("showpostbutton");
	//dasimg.src = "orig.jpeg";
	dasimg.style.backgroundImage = "url(orig.jpeg)";
	origbutton.src = "/assets/gallery/orig_on.gif";
	postbutton.src = "/assets/gallery/final_off.gif";
}

function ShowPostGalImage () {
	var dasimg = document.getElementById("mainimage");
	var origbutton = document.getElementById("showorigbutton");
	var postbutton = document.getElementById("showpostbutton");
	//dasimg.src = "post.jpeg";
	dasimg.style.backgroundImage = "url(post.jpeg)";
	origbutton.src = "/assets/gallery/orig_off.gif";
	postbutton.src = "/assets/gallery/final_on.gif";
}


addLoadEvent(initLinks);