// JavaScript Document
var sliderTimer = sliderN = 0, sliderCount=5, className = "";
function Slider() {
		sliderCount= $("#feature li").size();
		$("#feature li:not(:first-child)").hide();
		$("#nivo_nextNav").css({"background":"url(img/iwui_index_banner_arrows.gif) no-repeat -30px 0"});
		$("#nivo_prevNav").css({"background":"url(img/iwui_index_banner_arrows.gif) no-repeat"});
		$("#nivo_nextNav").click(function(){
			sliderN++;
			$current_li=$("#feature li").filter(":visible");
			if (sliderN >= sliderCount){
				sliderN=0;
				$current_li.fadeOut(300,function(){
				$("#feature :first-child").fadeIn(800)});	
			}
			else{
				var $next_li_bg=$("#feature li").filter(":visible").next().css('backgroundImage');
				$("#feature").css({background:$next_li_bg});
				$current_li.fadeOut(300);
				$current_li.next().fadeIn(800);
				}
			
		});
		$("#nivo_prevNav").click(function() {
			sliderN--;
			$current_li=$("#feature li").filter(":visible");
			if (sliderN < 0){
				sliderN = sliderCount-1;
				$current_li.fadeOut(300,function(){
				$("#feature :last-child").fadeIn(800)
			});}
			else{
				var $prev_li_bg=$("#feature li").filter(":visible").prev().css('backgroundImage');
				$("#feature").css({background:$prev_li_bg});
				$current_li.fadeOut(300);
				$current_li.prev().fadeIn(800);}
			
		});	
		sliderTimer = setInterval("SliderAuto()", 12000);
		
		$(".hd, #nivo_nextNav, #nivo_prevNav").click(function(){
			clearInterval(sliderTimer)
			sliderTimer = setInterval("SliderAuto()", 12000);
		}, function(){
			clearInterval(sliderTimer)
			sliderTimer = setInterval("SliderAuto()", 12000);
		});
		
		var state=0;
		$(".hd").mouseover(function(){
			var nav_opacity=$("#nivo_prevNav").css('opacity');
			if(nav_opacity==1){
				state=1;
				$("#nivo_prevNav,#nivo_nextNav").animate({opacity: 'show'},{duration:'fast'});
			}
		});

		$(".bd").mouseover(function(){
			if(state==1){
				state=0;
				$("#nivo_prevNav,#nivo_nextNav").animate({opacity: 'hide'},{duration:'fast'});
			}
    	});
}
function SliderAuto() {
	$("#nivo_nextNav").trigger("click");
}
$(document).ready(function(){ Slider();})