var headline_count;
var headline_interval;
var old_headline = 0;
var current_headline=0;

function mainmenu(){
	document.getElementById('searchfield').value="Search";
	
	// MENU SECTION
	$(" #nav li a img ").hover(function() {
		var nav_id = $(this).attr("id");
		$(this).attr("src",currentPath+"images/topnav/"+nav_id+"-hover.jpg");
			}, function() {
		var nav_id = $(this).attr("id");
		$(this).attr("src",currentPath+"images/topnav/"+nav_id+".jpg");
	});
		
	$(" #nav ul ").css({display: "none"}); // Opera Fix
	$(" #nav li").hover(function(){
			$(this).find('ul:first:hidden').css({visibility: "visible",display: "none"}).show(400);
			},function(){
			$(this).find('ul:first').css({visibility: "hidden"});
			});
	
	if(document.getElementById('sitetree') != null){
		$("#sitetree").treeview({
			collapsed: true,
			animated: "medium",
			control:"#sitetreecontrol",
			persist: "location"
		});
	}
} 


$(document).ready(function(){
	// TEXT SCROLLER
	headline_count = $("ul#scrollup li").size();
	$("ul#scrollup li:eq("+current_headline+")").css('top','5px');
	
	headline_interval = setInterval(headline_rotate,7000); //time in milliseconds
	
	mainmenu();
});

function headline_rotate() {
  current_headline = (old_headline + 1) % headline_count; //remainder will always equal old_headline until it reaches headline_count - at which point it becomes zero. clock arithmetic
  $("ul#scrollup li:eq(" + old_headline + ")").animate({top: -31},"slow", function() {
    $(this).css('top','36px');
    });
  $("ul#scrollup li:eq(" + current_headline + ")").show().animate({top: 5},"slow");  
  old_headline = current_headline;
}