var preloadFlag = false;

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function preloadImagesSK() {
	if (document.images) {
		header_06_over = newImage("/images/header_06-over.gif");
		header_07_over = newImage("/images/header_07-over.gif");
		header_08_over = newImage("/images/header_08-over.gif");
		header_09_over = newImage("/images/header_09-over.gif");
		header_10_over = newImage("/images/header_10-over.gif");
		quote_button_01_over = newImage("/images/quote_button_01-over.gif");
		quote_button_over 	= newImage("/images/quote_button-over.gif");
		preloadFlag = true;
	}
}

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: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			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.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();

function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}

function changeCSS(thisId,changeTo) {
	if (thisElement = document.getElementById(thisId)) {
		thisElement.className = changeTo;	
	}
}

function changeImages(thisId,changeTo) {
	if (document.images && (preloadFlag == true)) {
		if (thisImage = document.getElementById(thisId)) {
			thisImage.src = changeTo;
		}
	}
}

function changeContent(thisId,changeTo) {
	if (thisElement = document.getElementById(thisId)) {
		thisElement.innerHTML = changeTo;	
	}
}

function jsErrorHandler(msg) {
	alert(msg);
}

function protectEmail(username,hostname,linktext) {
	if (linktext=='' || linktext==null) {
		var linktext = username + "@" + hostname;
	}
	return "<a href=" + "mail" + "to:" + username +	"@" + hostname + ">" + linktext + "</a>";
}

function echeck(str) {

	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
		return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		return false
	}

	if (str.indexOf(at,(lat+1))!=-1){
		return false
	}

	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		return false
	}

	if (str.indexOf(dot,(lat+2))==-1){
		return false
	}
		
	if (str.indexOf(" ")!=-1){
		return false
	}

	return true					

}



function grabElement(element) {
	if (return_element = document.getElementById(element)) {
		return return_element;
	} else {
		return null;	
	}
}


function sk_checkContactForm() {

	var errorString = '';

	email					= grabElement("email");
	phone					= grabElement("dayphone");
	comments				= grabElement("comments");

	if (email.length<=0 || email.value==null || echeck(email.value)==false) {
		errorString = errorString + '* Please enter a valid email address into the form.' + "\r\n";		
	}

	if (comments.length <= 0 || comments.value == '' || comments.value == null) {
		errorString = errorString + '* Please enter your comments into the form.' + "\r\n";	
	}
	
	if (errorString.length > 2) {
		jsErrorHandler(errorString);
		return false;	
	} else {
		return true;	
	}
	
}

function checkCompanyForm() {

	var errorString = '';
	company_name 		= grabElement("company_name");
	company_contact 	= grabElement("company_contact");
	company_email		= grabElement("company_email");
	company_address		= grabElement("company_address1");
	company_city		= grabElement("company_city");	
	company_zip			= grabElement("company_zip");	
	admin_user			= grabElement("admin_user");	
	admin_pass			= grabElement("admin_pass");	
	
	if (company_name.length<=0 || company_name.value=='My Company' || company_name.value==null) {
		errorString = errorString + '* Please enter your company name into the form.' + "\r\n";	
	}

	if (company_contact.length<=0 || company_contact.value=='Mr. Contact' || company_contact.value==null) {
		errorString = errorString + '* Please enter your company contact name into the form.' + "\r\n";	
	}

	if (company_email.length<=0 || company_email.value==null || echeck(company_email.value)==false || company_email.value=='My Email') {
		errorString = errorString + '* Please enter a valid email address into the form.' + "\r\n";		
	}

	if (company_address.length<=0 || company_address.value=='My Address 1' || company_address.value==null) {
		errorString = errorString + '* Please enter your company address into the form.' + "\r\n";	
	}
	
	if (company_city.length<=0 || company_city.value=='My City' || company_city.value==null) {
		errorString = errorString + '* Please enter your company city into the form.' + "\r\n";	
	}

	if (company_zip.length<=0 || company_zip.value=='My Zip' || company_zip.value==null) {
		errorString = errorString + '* Please enter your company zip/post code into the form.' + "\r\n";	
	}

	if (admin_user.length<=0 || admin_user.value=='Enter' || admin_user.value==null) {
		errorString = errorString + '* Please choose an administrator username for the site.' + "\r\n";	
	}

	if (admin_pass.length<=0 || admin_pass.value=='Enter' || admin_pass.value==null) {
		errorString = errorString + '* Please choose an administrator password for the site.' + "\r\n";	
	}

	if (errorString.length > 2) {
		jsErrorHandler(errorString);
		return false;	
	} else {
		return true;	
	}

}

function checkAdminLogin() {

	var errorString = '';
	admin_user 		= grabElement("admin_user");
	admin_pass	 	= grabElement("admin_pass");
	
	if (admin_user.value=='' || admin_user.value==null) {
		errorString = errorString + '* Please enter the administrator username.' + "\r\n";	
	}

	if (admin_pass.value=='' || admin_pass.value==null) {
		errorString = errorString + '* Please enter the administrator password.' + "\r\n";	
	}

	if (errorString.length > 2) {
		jsErrorHandler(errorString);
		return false;	
	} else {
		return true;	
	}

}

function sk_changeCSS(elementToChange,changeToClass) {
	if (elementToChange != null && changeToClass != null) {
		document.getElementById(elementToChange).className = changeToClass;
		return true;
	}
	return false;
}

function skToggle(obj) {
	var el = document.getElementById(obj);
	el.style.display 	= (el.style.display != 'none' ? 'none' : 'block' );
	el.style.visibility = (el.style.visibility != 'hidden' ? 'hidden' : 'visible' );
}

function stripCharacter(words,character) {
	var spaces = words.length;
	for(var x = 1; x<spaces; ++x){
		words = words.replace(character, "");   
	}
	return words;
}

function setCookie(name, value, expires, path, domain, secure) {
    document.cookie= name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires.toGMTString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

function getCookie(name) {
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1) {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    } else {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1) {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}

function deleteCookie(name, path, domain) {
    if (getCookie(name)) {
        document.cookie = name + "=" +
            ((path) ? "; path=" + path : "") +
            ((domain) ? "; domain=" + domain : "") +
            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}
  

function checkQuoteForm() {

	var errorString = '';

	customer_name 		= grabElement("customer_name");
	customer_address 	= grabElement("customer_address");
	customer_city	 	= grabElement("customer_city");
	customer_zipcode 	= grabElement("customer_zipcode");
	customer_email 		= grabElement("customer_email");
	terms_conditions	= grabElement("terms_conditions");
	
	if (terms_conditions.checked == false) {
		errorString = errorString + '* You must acknowledge the terms and conditions of this offer.' + "\r\n";		
	}

	if (customer_name.length<=0 || customer_name.value=='') {
		errorString = errorString + '* Please enter your name into the form.' + "\r\n";	
	}

	if (customer_address.length<=0 || customer_address.value=='') {
		errorString = errorString + '* Please enter your address into the form.' + "\r\n";	
	}

	if (customer_city.length<=0 || customer_city.value=='') {
		errorString = errorString + '* Please enter your city into the form.' + "\r\n";	
	}

	if (customer_email.length<=0 || customer_email.value=='' || echeck(customer_email.value)==false) {
		errorString = errorString + '* Please enter a valid email address into the form.' + "\r\n";		
	}

	if (customer_zipcode.length<=0 || customer_zipcode.value=='') {
		errorString = errorString + '* Please enter your zip code into the form.' + "\r\n";	
	}
	
	if (errorString.length > 2) {
		jsErrorHandler(errorString);
		return false;	
	} else {
		if (submitButton = grabElement("quote_form_submit")) {
			submitButton.value="GETTING CASH FOR YOUR LAPTOP...";
		}
		return true;	
	}

}

function checkReportByDate() {
	var errorString = '';

	start_date		=	grabElement("start_date");
	end_date		=	grabElement("end_date");

	if (start_date.length<=0 || start_date.value=='' || start_date.value=='mm/dd/YYYY') {
		errorString = errorString + '* Please enter a valid start date into the form.' + "\r\n";
	}

	if (end_date.length<=0 || end_date.value=='' || end_date.value=='mm/dd/YYYY') {
		errorString = errorString + '* Please enter a valid end date into the form.' + "\r\n";
	}

	if (errorString.length > 2) {
		jsErrorHandler(errorString);
		return false;	
	} else {
		return true;	
	}

}

function sk_popUp(url,width,height) {

	popUpParams = "location=1, menubar=0, scrollbars=1, resizable=1, status=0, toolbar=0, width=" + width + ", height=" + height;
	window.open(url,'skPopUp',popUpParams);

}