function show(element){
		document.getElementById(element).style.display= 'none';
}

function hide(element){
		document.getElementById(element).style.display= 'block';
}

function test(element){
 if(document.getElementById(element).style.display=='none'){
   hide(element);}
else{
   show(element);}
}


// JavaScript Document

//Scrollsak

function backToTop() {

    var x1 = x2 = x3 = 0;

    var y1 = y2 = y3 = 0;



    if (document.documentElement) {

        x1 = document.documentElement.scrollLeft || 0;

        y1 = document.documentElement.scrollTop || 0;

    }



    if (document.body) {

        x2 = document.body.scrollLeft || 0;

        y2 = document.body.scrollTop || 0;

    }



    x3 = window.scrollX || 0;

    y3 = window.scrollY || 0;



    var x = Math.max(x1, Math.max(x2, x3));

    var y = Math.max(y1, Math.max(y2, y3));



    window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));



    if (x > 0 || y > 0) {

        window.setTimeout("backToTop()", 25);

    }

}

//Nytt vindu eksterne lenker

this.blankwin = function(){

	var hostname = window.location.hostname;

	hostname = hostname.replace("www.","").toLowerCase();

	var a = document.getElementsByTagName("a");	

	this.check = function(obj){

		var href = obj.href.toLowerCase();

		return (href.indexOf("http://")!=-1 && href.indexOf(hostname)==-1) ? true : false;				

	};

	this.set = function(obj){

		obj.target = "_blank";

		obj.className = "external";

	};	

	for (var i=0;i<a.length;i++){

		if(check(a[i])) set(a[i]);

	};		

};