function presLarge(picID) {
	var billede = document.getElementById("billede");
	var newBillede = document.getElementById(picID);
	var currentImagePath = newBillede.src
	billede.src = currentImagePath.replace('small/','medium/');
	largeImage = currentImagePath.replace('small/','large/');
	billede.onclick = function(){
	  popUp('/pages/showAnyPic.asp?picture=' + largeImage,'','580','500','');
	};
}