https://www.newcastle.gov.uk/sites/default/files/js/optimized/js_y…uDjEpV0Yjnhs-4yaL9as1CPuk9x2Ro9q0.js?tl1bgf

1/*! loadCSS rel=preload polyfill. [c]2017 Filament Group, Inc. MIT License */
2(function( w ){
3    // rel=preload support test
4    if( !w.loadCSS ){
5        return;
6    }
7    var rp = loadCSS.relpreload = {};
8    rp.support = function(){
9        try {
10            return w.document.createElement( "link" ).relList.supports( "preload" );
11        } catch (e) {
12            return false;
13        }
14    };
15
16    // loop preload links and fetch using loadCSS
17    rp.poly = function(){
18        var links = w.document.getElementsByTagName( "link" );
19        for( var i = 0; i < links.length; i++ ){
20            var link = links[ i ];
21            if( link.rel === "preload" && link.getAttribute( "as" ) === "style" ){
22                w.loadCSS( link.href, link, link.getAttribute( "media" ) );
23                link.rel = null;
24            }
25        }
26    };
27
28    // if link[rel=preload] is not supported, we must fetch the CSS manually using loadCSS
29    if( !rp.support() ){
30        rp.poly();
31        var run = w.setInterval( rp.poly, 300 );
32        if( w.addEventListener ){
33            w.addEventListener( "load", function(){
34                rp.poly();
35                w.clearInterval( run );
36            } );
37        }
38        if( w.attachEvent ){
39            w.attachEvent( "onload", function(){
40                w.clearInterval( run );
41            } )
42        }
43    }
44}( this ));