var offImg1 = new Image;
var onImg1 = new Image;
var offImg2 = new Image;
var onImg2 = new Image;
var offImg3 = new Image;
var onImg3 = new Image;
var offImg5 = new Image;
var onImg5 = new Image;
var offImg7 = new Image;
var onImg7 = new Image;
		
offImg1.src = "navBut1.gif";
offImg2.src = "navBut2.gif";
offImg3.src = "navBut3.gif";
offImg5.src = "navBut5.gif";
offImg7.src = "navBut7.gif";

onImg1.src = "navBut1On.gif";
onImg2.src = "navBut2On.gif";
onImg3.src = "navBut3On.gif";
onImg5.src = "navBut5On.gif";
onImg7.src = "navBut7On.gif";

// Når knap/img i fokus
function rollOn(tabid) {
				
    var forTab = document.getElementById('for');
    var webTab = document.getElementById('web');
    var refTab = document.getElementById('ref');
    var solTab = document.getElementById('sol');
//  var eduTab = document.getElementById('edu');    
				 			 
    if (tabid == 'FOR') {
  		forTab.src = onImg1.src;
  	}
    if (tabid == 'WEB') {
  		webTab.src = onImg3.src;
  	}				
    if (tabid == 'REF') {
  		refTab.src = onImg5.src;
  	}
    if (tabid == 'SOL') {
  		solTab.src = onImg7.src;
  	}
//   if (tabid == 'EDU') {
  		//eduTab.src = onImg2.src;
  	//}  													
}

// Når knap/img i fokus
function rollOff(tabid) {

    var forTab = document.getElementById('for');
    var eduTab = document.getElementById('edu');
    var webTab = document.getElementById('web');
    var refTab = document.getElementById('ref');
    var solTab = document.getElementById('sol');
    
    if (tabid == 'FOR') {
  		forTab.src = offImg1.src;				
  	}
		if (tabid == 'EDU') {
  		eduTab.src = offImg2.src;				
  	}
		if (tabid == 'WEB') {
  		webTab.src = offImg3.src;				
  	}						
		if (tabid == 'REF') {
  		refTab.src = offImg5.src;		
  	}
		if (tabid == 'SOL') {
  		solTab.src = offImg7.src;				
  	}				
}