// JavaScript Document

var curP = 1;

function toggleArrow(newAr) {
	document.getElementById("ar"+curP).src = 'images/pijl_rechts.png';
	document.getElementById("ar"+newAr).src = 'images/pijl_omlaag.png';
	
	curP = newAr;	
}

Array.prototype.shuffle = function (){ 
	for(var rnd, tmp, i=this.length; i; rnd=parseInt(Math.random()*i), tmp=this[--i], this[i]=this[rnd], this[rnd]=tmp);
};