function checkboxes ()
	{
	 	var box = document.getElementById("manage").checked;
		for(i = 0; ; i++)
			{
				del = document.getElementById("delete" + i);
				if(del != null)
					{
						document.getElementById("delete" + i).checked = box;
					}
				else break;
			}
	}

function checkit ()
	{
	 	var box = document.getElementById("manage").checked;
	 	//alert(box);
		var other = true;
		for(i = 0; ; i++)
			{
				var del = document.getElementById("delete" + i);
				if(del != null)
					{
						if(del.checked == false)
							{
								other = false;
							}
					}
				else break;
			}
		document.getElementById("manage").checked = other;
	}

function change_photo(photo)
	{
		document.getElementById('photo').src = 'photos/normal/'+photo;
	}

function sure(question, destination)
	{
		var sure = confirm(question);
		if(sure == true)
			{
				location.href = destination;
			}
		else
			{
				return false;
			}
	}


//////////////////////////////////////////

function omhoog()
	{
		var items = document.getElementById('')
	}

function goleft()
	{
		var links = document.getElementById("left")
		var rechts = document.getElementById("right")
	 	if(rechts.selectedIndex != -1)
	 		{
	 		 	var option = rechts.options[rechts.selectedIndex]
				links.options[links.options.length] = option
				var value = document.getElementById('grpuserlijstvalues').value.split(",")
				var newvalue = new Array()
				for(id in value)
					{
						if(value[id] != option.value)
							{
								var huppeldepup = newvalue.unshift(value[id])
							}
					}
				document.getElementById('grpuserlijstvalues').value = newvalue.join(',')
			}
	}

function goright()
	{
		var links = document.getElementById("left")
		var rechts = document.getElementById("right")
	 	if(links.selectedIndex != -1)
	 		{
	 		 	var option = links.options[links.selectedIndex]
				rechts.options[rechts.options.length] = option
				document.getElementById('grpuserlijstvalues').value += ','+option.value
			}
	}