$(document).ready(function(){
	//<========image slider========>
	//Show the paging and activate its first link
	$("#toppage-contents-topics-paging").show();
	$("#toppage-contents-topics-paging a:first").addClass("active");
	//Get size of the image, how many images there are, then determin the size of the image reel.
	var imageWidth = $("#toppage-contents-topics-window").width();
	var imageSum = $("#toppage-contents-topics-window-imagereel img").size();
	var imageReelWidth = imageWidth * imageSum;
	//Adjust the image reel to its new size
	$("#toppage-contents-topics-window-imagereel").css({'width' : imageReelWidth});
	//Paging  and Slider Function
	rotate = function(){
		var triggerID = $active.attr("rel") - 1; //Get number of times to slide
		var image_reelPosition = triggerID * imageWidth; //Determines the distance the image reel needs to slide
		$("#toppage-contents-topics-paging a").removeClass('active'); //Remove all active class
		$active.addClass('active'); //Add active class (the $active is declared in the rotateSwitch function)
		//Slider Animation
		$("#toppage-contents-topics-window-imagereel").animate({
			left: -image_reelPosition
		},500);
	}; 
	//Rotation  and Timing Event
	rotateSwitch = function(){
		play = setInterval(function(){ //Set timer - this will repeat itself every 7 seconds
			$active = $('#toppage-contents-topics-paging a.active').next(); //Move to the next paging
			if ( $active.length === 0) { //If paging reaches the end...
				$active = $('#toppage-contents-topics-paging a:first'); //go back to first
			}
			rotate(); //Trigger the paging and slider function
		}, 7000); //Timer speed in milliseconds (7 seconds)
	};
	rotateSwitch(); //Run function on launch
	//On Hover
	$("#toppage-contents-topics-window-imagereel a").hover(function() {
		clearInterval(play); //Stop the rotation
	}, function() {
    	rotateSwitch(); //Resume rotation timer
	});	
	//On Click
	$("#toppage-contents-topics-paging a").click(function() {
		$active = $(this); //Activate the clicked paging
		//Reset Timer
		clearInterval(play); //Stop the rotation
		rotate(); //Trigger rotation immediately
		rotateSwitch(); // Resume rotation timer
		return false; //Prevent browser jump to link anchor
	});
});