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

var externalLinks = function () {
	var links = document.getElementsByTagName("a");
	for (i=0; i<links.length; i++) {
		var enlace = links[i];
		if (enlace.getAttribute("target") == "_blank") {
			enlace.className = "external";
		}
	}
	// ahora quita la clase al de powered by
	var pwr = document.getElementById("powered");
	var links = pwr.getElementsByTagName("a");
	links[0].className = '';
}

var imagesize = null;

var resizeImg = function() {
	// reescala la imagen principal
	var img = $("#mainimg");
	// 
	if ($(window).width() < 1100 && img != null && img.width() > 660) {
		// console.log("resizing");
		img.width(660);
	} else {
		img.width(imagesize);
	}
	// console.log("final "+img.width()+" window: "+$(window).width());
}

var resizeEvents = function () {
	var img = $("#mainimg");
	imagesize = img.width();
	// resizeImg();
	$(window).bind('resize', resizeImg);
	resizeImg();
}