var selected="menu1";
var activeelement='velkommen';

function button_on ( imgId )
{
  if ( document.images)
  {
    butOn = eval ( imgId + "_on.src" );
    document.getElementById(imgId).src = butOn;
  }
}
 
function button_off ( imgId )
{
  if ( document.images )
  {
    if (imgId==selected)
	{
    butOff = eval(imgId+"_sel.scr"); 
    document.getElementById(imgId).src = butOff;
	}
	else
	{
    butOff = eval ( imgId + "_off.src" );
    document.getElementById(imgId).src = butOff;
	}
  }
}

function selectMenu ( imgId )
{
 
if ( document.images )
  {
    button_on(selected); //turn selected on
    butSel=eval(imgId+"_sel.scr"); // set new to selected
    document.getElementById(imgId).src=butSel;
  }

selected=imgId;
}

menu1_on = new Image (150,44);
menu1_off = new Image (150,44);
menu1_sel = new Image (150,44);
menu1_on.src = "images/menu1-1.jpg";
menu1_off.src = "images/menu3-1.jpg";
menu1_sel.scr = "images/menu2-1.jpg";
 
menu2_on = new Image (158,44);
menu2_off = new Image (158,44);
menu2_sel = new Image (158,44);
menu2_on.src = "images/menu1-2.jpg";
menu2_off.src = "images/menu3-2.jpg";
menu2_sel.scr=  "images/menu2-2.jpg";

menu3_on = new Image (138,44);
menu3_off = new Image (138,44);
menu3_sel = new Image (138,44);
menu3_on.src = "images/menu1-3.jpg";
menu3_off.src = "images/menu3-3.jpg";
menu3_sel.scr =  "images/menu2-3.jpg";

menu4_on = new Image (151,44);
menu4_off = new Image (151,44);
menu4_sel = new Image (151,44);
menu4_on.src = "images/menu1-4.jpg";
menu4_off.src = "images/menu3-4.jpg";
menu4_sel.scr =  "images/menu2-4.jpg";
 
function setHidden()
{

document.getElementById("produkter").style.display ='none';

document.getElementById("tilbyder").style.display ='none';

document.getElementById("kontakt").style.display ='none';

document.getElementById("velkommen").style.display ='none';

var hash = getUrlVars(); 
var page=hash['page']
if (page!="produkter" && page!="tilbyder" && page!="kontakt") page="velkommen";
toggle(page);
}



function toggle(obj) {
  
 
{
    
document.getElementById(activeelement).style.display ='none';
 with (document.getElementById(obj).style)
 { display = (display == 'none') ? 'block' : 'none'; activeelement=obj}
        
  }

}

function getUrlVars()
{
var vars = [], hash;
var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for(var i = 0; i < hashes.length; i++)
{
hash = hashes[i].split('=');
vars.push(hash[0]);
vars[hash[0]] = hash[1];
}
return vars;
}