//js for switching content on and off under a specific id
function selectObject(name,elementId) {
	if (!document.getElementById) return;
	var navRoot = document.getElementById(elementId);
	if (navRoot) {
		for (i=0; i<navRoot.childNodes.length; i++) {
			node = navRoot.childNodes[i];
			if (node.id == name) {
				node.className = "textOn";
			} else {
				node.className = "textOff";
			}
		}
	}
}

// turn items on or off, displayed or not displayed
function textOnOff() {
	for (var i=0; i < arguments.length; i++) {
		var item = document.getElementById(arguments[i]);
		if (item.className=="textOn") {
			item.className= "textOff";
		} else { 
			item.className= "textOn";
		}
	}
}
// turn items on or off, displayed or not displayed
function textOff() {
	for (var i=0; i < arguments.length; i++) {
		var item = document.getElementById(arguments[i]);
		if (item.className=="textOn") {
			item.className= "textOff";
		} 
	}
}
// turn items on or off, displayed or not displayed
function textOn() {
	for (var i=0; i < arguments.length; i++) {
		var item = document.getElementById(arguments[i]);
		if (item.className=="textOff") {
			item.className= "textOn";
		} 
	}
}

//grabs variables from the address bar
function getQueryVariable(variable) {
    var query = window.location.search.substring(1);
    var vars = query.split("&");
    for (var i=0;i<vars.length;i++) {
        var pair = vars[i].split("=");
        if (pair[0] == variable) {
          return pair[1];
        }
    } 
      //alert('Query Variable ' + variable + ' not found');
}


function theRotator() {
	//Set the opacity of all images to 0
	$('div#rotator ul li').css({opacity: 0.0});
	
	//Get the first image and display it (gets set to full opacity)
	$('div#rotator ul li:first').css({opacity: 1.0});
		
	//Call the rotator function to run the slideshow, 6000 = change to next image after 6 seconds
	setInterval('rotate()',3500);
	
}

function rotate() {	
	//Get the first image
	var current = ($('div#rotator ul li.show')?  $('div#rotator ul li.show') : $('div#rotator ul li:first'));

	//Get next image, when it reaches the end, rotate it back to the first image
	var next = ((current.next().length) ? ((current.next().hasClass('show')) ? $('div#rotator ul li:first') :current.next()) : $('div#rotator ul li:first'));	
	
	//Set the fade in effect for the next image, the show class has higher z-index
	next.css({opacity: 0.0})
	.addClass('show')
	.animate({opacity: 1.0}, 1000);

	//Hide the current image
	current.animate({opacity: 0.0}, 1000)
	.removeClass('show');
	
};


$(document).ready(function() {		
	//Load the slideshow
	theRotator();

});