// javascript document
$(document).ready(function() {
	//set default state of each portfolio piece
	$(".picshow_paging").show();
	$(".picshow_paging span:first").addclass("active");
		
	//get size of images, how many there are, then determin the size of the image reel.
	var imagewidth = $(".picshow_window").width();
	var imagesum = $(".picshow_reel li").size();
	var imagereelwidth = imagewidth * imagesum;
	
	//adjust the image reel to its new size
	$(".picshow_reel").css({'width' : imagereelwidth});
	
	//paging + slider function
	picrotate = function(){	
		var triggerid = $active.attr("picpage") - 1; //get number of times to slide
		var image_reelposition = triggerid * imagewidth; //determines the distance the image reel needs to slide

		$(".picshow_paging span").removeclass('active'); //remove all active class
		$active.addclass('active'); //add active class (the $active is declared in the rotateswitch function)
		
		//slider animation
		$(".picshow_reel").animate({ 
			left: -image_reelposition
		}, 600 );
		
	}; 
	
	//rotation + timing event
	picrotateswitch = function(){		
		picplay = setinterval(function(){ //set timer - this will repeat itself every 3 seconds
			$active = $('.picshow_paging span.active').next();
			if ( $active.length === 0) { //if paging reaches the end...
				$active = $('.picshow_paging span:first'); //go back to first
			}
			picrotate(); //trigger the paging and slider function
		}, 4000); //timer speed in milliseconds (3 seconds)
	};
	
	picrotateswitch(); //run function on launch
	
	//on hover
	$(".picshow_reel li").hover(function() {		
		clearinterval(picplay); //stop the rotation
	}, function() {
		picrotateswitch(); //resume rotation
	});	
	
	//on click
	$(".picshow_paging span").click(function() {	
		$active = $(this); //activate the clicked paging
		//reset timer
		clearinterval(picplay); //stop the rotation
		picrotate(); //trigger rotation immediately
		picrotateswitch(); // resume rotation
		return false; //prevent browser jump to link anchor
	});	
	
});