// checks refering sites for scotland domain and prompts user accordingly

refererhandler = {
	init: function() {
		if(!document.referrer) return;
		if(document.referrer.indexOf("wrapscotland.org.uk") > -1){
			
			var refererwarn = document.createElement("div");
			refererwarn.id="refererwarning";
			refererwarn.innerHTML='You are now on wrap.org.uk.  If you wish, you can go <a href="'+document.referrer+'">back to wrapscotland.org.uk</a>';
			
			var header=document.getElementById("wrapper");
			var logo=document.getElementById("header");
			header.insertBefore(refererwarn, logo);
			document.getElementById('wrapper').style.marginTop="25px";
		}
	},

	addEvent: function( obj, type, fn ) {
		if ( obj.attachEvent ) {
			obj['e'+type+fn] = fn;
			obj[type+fn] = function(){obj['e'+type+fn]( window.event );}
			obj.attachEvent( 'on'+type, obj[type+fn] );
		} else {
			obj.addEventListener( type, fn, false );
		}
	}
}

refererhandler.addEvent(window,"load",refererhandler.init);