GPT Tags take 100 bazillion

gistfile1.js

/* Initialize Google Publisher Tags API - Docs: http://goo.gl/ZqOiy */
var gptadslots = [];
var googletag = googletag || {};
googletag.cmd = googletag.cmd || [];
(function() {
	var gads = document.createElement('script');
	gads.async = true;
	gads.type = 'text/javascript';
	var useSSL = 'https:' == document.location.protocol;
	gads.src = (useSSL ? 'https:' : 'http:') + '//www.googletagservices.com/tag/js/gpt.js';
	var node = document.getElementsByTagName('script')[0];
	node.parentNode.insertBefore(gads, node);
})();

/* Initialize Push Function - Docs: http://goo.gl/EVjef */
googletag.cmd.push(function() {
	var metas = document.getElementsByTagName('meta'),
		mapping1,
		mapping2,
		busy = false,
		resizer;

	/*
	 *  this function tries to prevent to many window resize events from firing too quickly
	 */
	resizer = function() {

		if (busy) {
			googletag.pubads().refresh();
			clearTimeout(busy);
		}
	};
	window.onresize = function() {
		busy = setTimeout(resizer, 250);
	};
	/* Get value of a META tag by attribute name and return its value. If undefined, return default string. */
	/* Santize string and replace all special characters with underscores. */
	this.getTag = function(metaname, tagdefault) {
		if (metaname === undefined) {
			return false;
		}
		if (tagdefault === undefined) {
			tagdefault = false;
		}
		var targets = [];
		for (i = 0; i < metas.length; i++) {
			/* Seek out the specific tag we need from all META tags available. Verify that it has a content attribute. */
			if (metas[i].getAttribute("name") == metaname && metas[i].getAttribute("content")) {
				targets.push(metas[i].getAttribute("content"));
			}
		}
		var tag = (targets[0] !== undefined) ? targets[0] : tagdefault; /* Return only the first one if it exists, otherwise default */
		if (tag === false) {
			return false;
		}
		if (tag == "mpr") {
			tag = "radio";
		} /* We use "mpr" to tag institutional content, but IBSys calls it "radio" */
		return tag.replace(/[^a-zA-Z0-9]/g, '_').toLowerCase(); /* Sanitize to accept only lowercase letters, numbers and underscores: http://stackoverflow.com/a/9705227 */
	};

	/* Defult Slot Properties - Should result in an ad slot like "/3468/ibs.mpr.news/health/todays_question" */
	this.buildslot = [];

	if (this.getTag("mpr-content-topic")) {
		this.buildslot.push(this.getTag("mpr-content-topic"));
	} /* append mpr-content-topic meta tag if it exists */
	if (this.getTag("mpr-program")) {
		this.buildslot.push(this.getTag("mpr-program"));
	} /* append mpr-program meta tag if it exists */
	if (this.getTag("mpr-subsite")) {
		this.buildslot.push(this.getTag("mpr-subsite"));
	} /* append mpr-subsite meta tag if it exists */
	if (this.getTag("mpr-content-group")) {
		this.buildslot.push(this.getTag("mpr-content-group"));
	} /* append mpr-content-group meta tag if it exists */

	this.buildslot = (this.buildslot.length) ? this.buildslot.join("/") : "default"; /* append "default" if ad slot is empty */
	this.site = this.getTag("mpr-site", "radio"); /* assign site to adslot if meta tag exists, default to ibs.mpr.radio if not */
	this.slot = "/3468/ibs.mpr." + this.site + "/" + this.buildslot; /* concatenate all properties in to ad slot request */

	/* Define ad slots and map to element ID */
	gptadslots[1] = googletag.defineSlot(this.slot, [
		[300, 250],
		[300, 600]
	], 'mpr-ad-1').setTargeting('pos', ['mr_top']).addService(googletag.pubads()); /* multi */
	gptadslots[2] = googletag.defineSlot(this.slot, [
		[300, 250]
	], 'mpr-ad-2').setTargeting('pos', ['mr_bottom']).addService(googletag.pubads());
	gptadslots[3] = googletag.defineSlot(this.slot, [
		[728, 90]
	], 'mpr-ad-leader').setTargeting('pos', ['leader_top']).addService(googletag.pubads());
	gptadslots[0] = googletag.defineOutOfPageSlot(this.slot, 'mpr-ad-oop').addService(googletag.pubads());
	if (document.getElementById('membership-ad')) {
		
		mapping1 = googletag.sizeMapping().
		  addSize([0, 0], []).
		  addSize([421, 0], [800, 100]). // Desktop/Tablet
		  build();
		  
		mapping2 = googletag.sizeMapping().
		  addSize([0, 0], [420, 50]).
		  addSize([421, 0], []). // Mobile
		  build();
		
		gptadslots[4] = googletag.defineSlot('/31396736/mprnews_mbrshp_drive_banner_800x100', [800,100], 
		'membership-ad').defineSizeMapping(mapping1).addService(googletag.pubads());
		gptadslots[5] = googletag.defineSlot('/31396736/mprnews_mbrshp_drive_banner_420x50', [420,50], 
		'membership-ad-mobile').defineSizeMapping(mapping2).addService(googletag.pubads());
	}

	/* Configure DFP publisher ads service - Docs: http://goo.gl/d6uBy */
	googletag.pubads().enableSingleRequest();
	googletag.pubads().enableAsyncRendering();
	googletag.pubads().collapseEmptyDivs();
	googletag.enableServices();

	/* Push ads to their assigned element ID - Be sure ids match those defined above. */
	/* Moved inside the first googletag.cmd.push method to prevent possible timing issues */
	googletag.cmd.push(function() {
		googletag.display('mpr-ad-1');
	});
	googletag.cmd.push(function() {
		googletag.display('mpr-ad-2');
	});
	googletag.cmd.push(function() {
		googletag.display('mpr-ad-leader');
	});
	googletag.cmd.push(function() {
		googletag.display('mpr-ad-oop');
	});
	if (document.getElementById('membership-ad-frame-wrapper')) {
		googletag.cmd.push(function() {
			document.getElementById("membership-ad-frame-wrapper").className = "has-ad";
			googletag.display('membership-ad');
			googletag.display('membership-ad-mobile');
		});
	}
});