//init params
var start_y_pos  = 120;
var step_size    = 50;
var timeout      = 3000;
var nr_of_items  = 3;
var margintop	 = 120;
var init_current = 0;
var current_item = 2;
var max_current = 2;
var timer;

margins = new Array();
margins[0] = margintop-100;
margins[1] = margintop-50;
margins[2] = margintop;

function toggle(actie, current_toggle) {
	welke = "item"+ids[current_toggle];
	if(actie == "aan") {		
		document.getElementById(welke).style.cursor = "pointer";
		document.getElementById(welke).className = "items_over";
		document.getElementById("pijl_actueel").style.display = "block";
		document.getElementById("pijl_actueel").style.margin = margins[current_toggle]+"px 0 0 173px";
		document.getElementById("foto").style.backgroundImage = "url('http://www.vereijkenhooijer.nl/vamil_mia/upload/actueel/md_" + welke + ".jpg')";
	} else {
		document.getElementById(welke).className = "items";
		document.getElementById("pijl_actueel").style.display = "none";
	}
}

function loopItems()
{	
    toggle("uit", current_item);	
	current_item++;

	if(current_item > max_current)
		current_item = init_current;	
	
	toggle("aan", current_item);	
	clearTimeout(timer);	
	timer = setTimeout("loopItems()", timeout);
}

function showItem(nr)
{
	clearTimeout(timer);
	
	toggle("uit", current_item);	
	toggle("aan", nr);
	
	current_item = nr;
}