var imglist = new Array (
	"images/leftmenuHomeOver.gif",
	"images/leftmenuNewsOver.gif",
	"images/leftmenuQuizOver.gif",
	"images/leftmenuDrumKitOver.gif",
	"images/leftmenuForumOver.gif",
	"images/leftmenuAboutTheBookOver.gif",
	"images/leftmenuLinksOver.gif",
	"images/leftmenuCopyrightOver.gif"
);

var imgs = new Array();

var count;

if (document.images) for (count=0; count<imglist.length; count++){
	imgs[count]=new Image(); imgs[count].src=imglist[count];
}

function mouseOver(img1,ref1){
	document.images[img1].src = ref1;
}
function mouseOut(img1,ref1){
	document.images[img1].src = ref1;
}

function conf(delurl){
	if (confirm("Are you sure you want to delete this item?")) {
		top.window.open(delurl,'_top');
	}
}



// Functies voor het toevoegen van een patroon via een popup
  function drumkitPopup(deUrl){
    window.open(deUrl,'makePattern','width=580,height=480,location=no,menubar=no,resizable=no,scrollbars=no,status=no,titlebar=no');
  }
  function verwerkRitme( ritmeString, veld){
    if(ritmeString.length > 0){
      eval(veld).value = ritmeString;
      document.getElementById('geenRitme').style.visibility = 'hidden';
      document.getElementById('welRitme').style.visibility = 'visible';
    }
  }
  function verwijderRitme(veld){
    eval(veld).value = "";
    document.getElementById('geenRitme').style.visibility = 'visible';
    document.getElementById('welRitme').style.visibility = 'hidden';
  }