var current_ss = 1;
var subnav_pos;

function findPos(obj){
	var curleft = curtop = 0;
	if (obj.offsetParent) {
	do {
			curleft += obj.offsetLeft;
			curtop += obj.offsetTop;
		} while (obj = obj.offsetParent);
		return [curtop,curleft];
	}
	
}

$(document).ready(function(){

get_viewport_dimensions();
animate_large_cloud();
animate_large_cloud2();
animate_medium_cloud();
animate_small_cloud();

// slideshow load
var max_rand = $("#slideshow img").length - 1;
current_ss = Math.floor(Math.random()*max_rand);
$('#slideshow img').css({opacity: "0", display: "block"});
$('#slideshow img').eq(current_ss).css({opacity: "1", display: "block"});
current_ss++;
slideshow();

// subnav pos
subnav_pos = findPos(document.getElementById("cycle_hire_subnav"));

if(BrowserDetect.browser == 'Explorer' && BrowserDetect.version < 8){
$("#cycle_hire_subnav").css("position", "absolute");
}

});

$(window).scroll(function() {
	
	if($(window).scrollTop() > (subnav_pos[0] - 20)){
	
		if(BrowserDetect.browser == 'Explorer' && BrowserDetect.version == 7){
		$("#cycle_hire_subnav").css({ position: "fixed", left: subnav_pos[1] + 20});
		}
		
		else{
		$("#cycle_hire_subnav").css({ position: "fixed", left: subnav_pos[1]});
		}
	}
	
	else{
	$("#cycle_hire_subnav").css({ position: "absolute", left: "20px" });
	}
	
});

var viewportwidth;
var viewportheight;

function get_viewport_dimensions(){

	if(typeof window.innerWidth != 'undefined'){
	viewportwidth = window.innerWidth,
	viewportheight = window.innerHeight
	}
	 
	else if(typeof document.documentElement != 'undefined' && typeof document.documentElement.clientWidth != 'undefined' && document.documentElement.clientWidth != 0){
	viewportwidth = document.documentElement.clientWidth,
	viewportheight = document.documentElement.clientHeight
	}
	 
	else{
	viewportwidth = document.getElementsByTagName('body')[0].clientWidth,
	viewportheight = document.getElementsByTagName('body')[0].clientHeight
	}

}

function animate_large_cloud(){

$("#large_cloud").animate({left: viewportwidth + 1004}, 240000, 'linear', function(){
	$("#large_cloud").css("left", "-1004px");
	animate_large_cloud();
});

}

function animate_large_cloud2(){

$("#large_cloud2").animate({left: viewportwidth}, 300000, 'linear', function(){
	$("#large_cloud2").css("left", "-1004px");
	animate_large_cloud2();
});

}

function animate_medium_cloud(){

$("#medium_cloud").animate({right: viewportwidth}, 120000, 'linear', function(){
	$("#medium_cloud").css("right", "-482px");
	animate_medium_cloud();
});

}

function animate_small_cloud(){

$("#small_cloud").animate({right: viewportwidth}, 180000, 'linear', function(){
	$("#small_cloud").css("right", "-392px");
	animate_small_cloud();
});

}

// slideshow

var fade_speed = 1000;
var fade_delay = 2500;

function slideshow(){

var hide_id = current_ss - 1;

$("#slideshow img").eq(current_ss).delay(fade_delay).animate({opacity: "1"}, fade_speed, function(){

	$("#slideshow img").eq(hide_id).css({opacity: "0"});
	
	if(current_ss == ($("#slideshow img").length - 1)){
	$("#slideshow img").eq(0).css({opacity: "1"});
	$("#slideshow img").eq(current_ss).delay(fade_delay).animate({opacity: "0"}, fade_speed, function(){
		current_ss = 1;
		slideshow();
	});
	}
	
	else{
	current_ss++;
	slideshow();
	}

});

}

// browser detect

var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{
			string: navigator.userAgent,
			subString: "Chrome",
			identity: "Chrome"
		},
		{string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			   string: navigator.userAgent,
			   subString: "iPhone",
			   identity: "iPhone/iPod"
	    },
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();