JS Redirects without killing analytics and sourcing

On main page.js

var source = location.search; 
if(document.referrer){ 
source += "#referrer=" + encodeURIComponent(document.referrer); 
} 
window.location = splashurl + source ;

On Splash Page.js

//Before Google Analytics
window._gaq = window._gaq || []; 

	var get = (function() {
		var map = {};
		window.location.hash.replace(/[#&]+([^=&]+)=([^&]*)/gi, function(m, k, v) {
			map[k] = v;
		});
		return map;
	} ());
if(get.referrer){
 _gaq.push(["_setReferrerOverride", decodeURIComponent(get.referrer)]);
}