var subnav_pos;
var current_slide = 0;
var next_slide = 1;
var viewportwidth;
var viewportheight;

$(document).ready(function(){

get_viewport_dimensions();

	$("input, select, textarea").focus(function(){

	var parent_div = $(this).parent("div");
	$(parent_div).removeClass("error");
	$(parent_div).addClass("active");

	});
	
	$("input, select, textarea").blur(function(){

	var parent_div = $(this).parent("div");
	$(parent_div).removeClass("active");

	});
	
	$("#book_now_button, #enter_now_button").click(function(){
	
	// validate form

	if($(this).attr("id") == 'book_now_button'){
	var form_elements = new Array('title', 'first_name', 'last_name', 'preferred_method', 'address_1', 'town', 'appointment_1_date', 'appointment_1_time');
	}
	
	else{
	var form_elements = new Array('title', 'first_name', 'last_name', 'preferred_method', 'address_1', 'town');
	}
	
	var failed = false;
	
	for(x in form_elements){
	
		var parent_div = $("#"+form_elements[x]).parent("div");
	
		if(document.getElementById(form_elements[x]).value.length == 0){
		$(parent_div).addClass("error");
		failed = true;
		}
		
		else{
		$(parent_div).removeClass("error");
		}
	
	}
	
	// bespoke elements
	
	// email
	
	var emailValidationRule = new RegExp(/^[^@]+@([-\w]+\.)+[A-Za-z]{2,4}$/);

	if(!emailValidationRule.test(document.getElementById("email_address").value)){
	$("#email_address").parent("div").addClass("error");
	failed = true;
	}
	
	else{
	$("#email_address").parent("div").removeClass("error");
	}
	
	// phone numbers
	
	if(document.getElementById("landline").value.length == 0 && document.getElementById("mobile_phone").value.length == 0){
	$("#landline").parent("div").addClass("error");
	$("#mobile_phone").parent("div").addClass("error");
	failed = true;	
	}
	
	else{
	$("#landline").parent("div").removeClass("error");
	$("#mobile_phone").parent("div").removeClass("error");
	}
	
	// postcode
	
	var postcodeValidationRule = new RegExp(/^([A-PR-UWYZa-pr-uwyz]([0-9]{1,2}|([A-HK-Ya-hk-y][0-9]|[A-HK-Ya-hk-y][0-9]([0-9]|[ABEHMNPRV-Yabehmnprv-y]))|[0-9][A-HJKS-UWa-hjks-uw])\ {0,1}[0-9][ABD-HJLNP-UW-Zabd-hjlnp-uw-z]{2}|([Gg][Ii][Rr]\ 0[Aa][Aa])|([Ss][Aa][Nn]\ {0,1}[Tt][Aa]1)|([Bb][Ff][Pp][Oo]\ {0,1}([Cc]\/[Oo]\ )?[0-9]{1,4})|(([Aa][Ss][Cc][Nn]|[Bb][Bb][Nn][Dd]|[BFSbfs][Ii][Qq][Qq]|[Pp][Cc][Rr][Nn]|[Ss][Tt][Hh][Ll]|[Tt][Dd][Cc][Uu]|[Tt][Kk][Cc][Aa])\ {0,1}1[Zz][Zz]))$/);
	
	if(!postcodeValidationRule.test(document.getElementById("postcode").value)){
	$("#postcode").parent("div").addClass("error");
	failed = true;
	}
	
	else{
	$("#postcode").parent("div").removeClass("error");
	}
		
	// terms
	
	if(document.getElementById("terms").checked == false){
	$("#terms").parent("div").addClass("error");
	failed = true;
	}
	
	else{
	$("#terms").parent("div").removeClass("error");
	}
	
	if(failed == true){
	$("#form_error").show();
	}
	
	else{
	$("#form_error").hide();
	document.forms["booking_form"].submit();	
	}
	
	});

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

// slider

t=setTimeout("slider()", 5000);

$("#home_ss a").click(function(){

	if(!$("#home_ss .slider_item:eq("+next_slide+")").is(':animated')){
	
	clearTimeout(t);

		next_slide = (current_slide == 4) ? 0 : current_slide + 1;

		$("#home_ss .slider_item:eq("+next_slide+")").css("z-index", "2");

		$("#home_ss .slider_item:eq("+next_slide+")").animate({left: '0'}, 500, function(){

			$("#home_ss .slider_item:eq("+next_slide+") .text_image").fadeIn();
			$("#home_ss .slider_item:eq("+current_slide+")").css("left", "780px");
			$("#home_ss .slider_item:eq("+current_slide+")").css("z-index", "1");
			$("#home_ss .slider_item:eq("+next_slide+")").css("z-index", "1");
			$("#home_ss .slider_item:eq("+current_slide+") .text_image").hide();
			
			current_slide = next_slide;
			t=setTimeout("slider()",5000);

		});

	}

});

subnav_pos = findPos(document.getElementById("book_container"));
right_col_pos = findPos(document.getElementById("right_col"));

});


$(window).scroll(function() {

if(viewportheight > 700){

	if($(window).scrollTop() > (subnav_pos[0] - 20)){
	$("#book_container").css({ position: "fixed", top: '20px', left: right_col_pos[1] + 7});
	}
	
	else{
	$("#book_container").css({ position: "absolute", top: '0', left: '7px' });
	}
	
}
	
});

$(window).bind('resize', function(){

get_viewport_dimensions();

if(viewportheight > 700){

	right_col_pos = findPos(document.getElementById("right_col"));

	if($(window).scrollTop() > (subnav_pos[0] - 20)){
	$("#book_container").css({ top: '20px', left: right_col_pos[1] + 7 });
	}

}

});

function slider(){

next_slide = (current_slide == 4) ? 0 : current_slide + 1;

$("#home_ss .slider_item:eq("+next_slide+")").css("z-index", "2");

$("#home_ss .slider_item:eq("+next_slide+")").animate({left: '0'}, 500, function(){

	$("#home_ss .slider_item:eq("+next_slide+") .text_image").fadeIn();
	$("#home_ss .slider_item:eq("+current_slide+")").css("left", "780px");
	$("#home_ss .slider_item:eq("+current_slide+")").css("z-index", "1");
	$("#home_ss .slider_item:eq("+next_slide+")").css("z-index", "1");
	$("#home_ss .slider_item:eq("+current_slide+") .text_image").hide();
	
	current_slide = next_slide;
	t=setTimeout("slider()",5000);

});

}

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

// 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();