window.onload = rolloverInit;
/* ROLLOVERS */
function rolloverInit(){
	var navLinks = getElementsByClassName(document, "img", "navlink");
	if(navLinks != "") {
		for(var i=0; i<navLinks.length; i++){
			setupRollover(navLinks[i]);
		}
	}
	//Home page tabs - How Brady is right for you
	displayTabbedContent();
	//Brand area rollovers
	rolloverBrand();
}

function setupRollover(thisImage){
	thisImage.outImage = new Image();
	thisImage.outImage.src = thisImage.src;
	thisImage.onmouseout = rollOut;

	thisImage.overImage = new Image();
	thisImage.overImage.src = thisImage.src.substring(0,thisImage.src.length - 4) + "_on.gif";
	thisImage.onmouseover = rollOver;
}

function rollOver(){
	// if image/link is not already active
	if(this.src.indexOf("_on") == -1){
		this.src = this.overImage.src;
	}
}

function rollOut(){
	this.src = this.outImage.src;
}
/* End of ROLLOVERS */


/* Brand area rollovers */
function rolloverBrand(){
	if(document.getElementById('home_sectors')){
	
		var metals = document.getElementById("home_metals");
		var energy = document.getElementById("home_energy");
		var softs = document.getElementById("home_softs");

		metals.onmouseover = stateOn;
		energy.onmouseover = stateOn;
		softs.onmouseover = stateOn;
		
		metals.onmouseout = stateOff;
		energy.onmouseout = stateOff;
		softs.onmouseout = stateOff;
	}
}
function stateOn(){
	if(this.className.indexOf("_on") == -1){
		this.className = this.className + "_on";
	}
}
function stateOff(){
	if(this.className.indexOf("_on") != -1){
		this.className = this.className.substring(0,this.className.indexOf("_on"))
	}
}
/* End of Brand area rollovers */


/* HOME PAGE TABS */
function displayTabbedContent(){
	if(document.getElementById("how_trinity_box")){
		var i;
		var tabsArray = document.getElementById("how_tabs").getElementsByTagName("LI");
		for(i=0; i<tabsArray.length; i++){
			tabsArray[i].onclick = activateTab;
		}
	}
}
function activateTab(){
	var tabsArray = document.getElementById("how_tabs").getElementsByTagName("LI");
	var tabsContent = getElementsByClassName(document, "div", "how_trinity_content");
	var activeTab = this.id + "_block";
	for(i=0; i<tabsArray.length; i++){
		if(this.className != "tab_selected"){
			tabsArray[i].className = "na";
			tabsContent[i].style.display = "none";
		}
	}
	this.className = "tab_selected";
	document.getElementById(activeTab).style.display = "block";
	return false;
}
/* End of HOME PAGE TABS */


/* EQUAL BOX HEIGHTS */
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;
}

var BoxHeights = {
	maxh: 0,
	boxes: Array(),
	num: 0,
	equalise: function() {
		this.num = arguments.length;
		for (var i=0;i<this.num;i++) if (!$(arguments[i])) return;
		this.boxes = arguments;
		this.maxheight();
		for (var i=0;i<this.num;i++) $(arguments[i]).style.height = this.maxh+"px";
	},
	maxheight: function() {
		var heights = new Array();
		for (var i=0;i<this.num;i++) {
			if (navigator.userAgent.toLowerCase().indexOf('opera') == -1) {
				heights.push($(this.boxes[i]).scrollHeight);
			} else {
				heights.push($(this.boxes[i]).offsetHeight);
			}
		}
		heights.sort(this.sortNumeric);
		this.maxh = heights[this.num-1];
	},
	sortNumeric: function(f,s) {
		return f-s;
	}
}
/* End of EQUAL BOX HEIGHTS */










// ---
/*
    Written by Jonathan Snook, http://www.snook.ca/jonathan
    Add-ons by Robert Nyman, http://www.robertnyman.com
*/
function getElementsByClassName(oElm, strTagName, strClassName){
	var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	strClassName = strClassName.replace(/\-/g, "\\-");
	var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
	var oElement;
	for(var i=0; i<arrElements.length; i++){
		oElement = arrElements[i];		
		if(oRegExp.test(oElement.className)){
			arrReturnElements.push(oElement);
		}	
	}
	return (arrReturnElements)
}
// ---
/*
	Revised to support looking for multiple class names,
	no matter in which order they're applied to the element
*/
function getElementsByClassName(oElm, strTagName, oClassNames){
	var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	var arrRegExpClassNames = new Array();
	if(typeof oClassNames == "object"){
		for(var i=0; i<oClassNames.length; i++){
			arrRegExpClassNames.push(new RegExp("(^|\\s)" + oClassNames[i].replace(/\-/g, "\\-") + "(\\s|$)"));
		}
	}
	else{
		arrRegExpClassNames.push(new RegExp("(^|\\s)" + oClassNames.replace(/\-/g, "\\-") + "(\\s|$)"));
	}
	var oElement;
	var bMatchesAll;
	for(var j=0; j<arrElements.length; j++){
		oElement = arrElements[j];
		bMatchesAll = true;
		for(var k=0; k<arrRegExpClassNames.length; k++){
			if(!arrRegExpClassNames[k].test(oElement.className)){
				bMatchesAll = false;
				break;
			}
		}
		if(bMatchesAll){
			arrReturnElements.push(oElement);
		}
	}
	return (arrReturnElements)
}
// ---
// Array support for the push method in IE 5
if(typeof Array.prototype.push != "function"){
 Array.prototype.push = ArrayPush;
	function ArrayPush(value){
		this[this.length] = value;
	}
}

function check_contactform() {
  var error_message = "";

  if (document.data_form.fname.value == "") { error_message = error_message + "* Please tell us your First name\n";  }
  if (document.data_form.lname.value == "") { error_message = error_message + "* Please tell us your Surname\n";  }
  if (document.data_form.email.value == "") {
    error_message = error_message + "* Please tell us your email address\n";
  } else if (!(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(document.data_form.email.value))){
    error_message = error_message + "* Please ener a valid Email address\n";
  }
  if (document.data_form.position.value == "") { error_message = error_message + "* Please tell us your Job title\n";  }
  if (document.data_form.company.value == "") { error_message = error_message + "* Please tell us your Company name\n";  }
  if (document.data_form.address1.value == "") { error_message = error_message + "* Please tell us your Address\n";  }
  if (document.data_form.country.value == -1) { error_message = error_message + "* Please select your Country\n";  }
  if (document.data_form.phone.value == "") { error_message = error_message + "* Please tell us your Telephone number\n";  }
  if (document.data_form.website.value == "") { error_message = error_message + "* Please tell us your Website address\n";  }
  if (checkCaptcha(document.data_form.captcha_id.value, document.data_form.captcha_answer.value) == false) {
    error_message = error_message + "* The answer given to the human check question was wrong.\n";
  } 
  if (error_message != "") {
    alert(error_message);
    return false;
  } else {
    return true;
  }
}


function checkCaptcha(id, answer) {
  var result = false;
	var myRequest = new Request.JSON({async: false, url: '/admin/services/captcha.php',
		onSuccess: function(jsonObj) {
			if (jsonObj.result == "0") {
			  result = false;
			} else {
			  result = true;
			}
		}
	});
	myRequest.get({'id':id, 'answer': answer});
	return result;
}


// ---
/*
	Examples of how to call the function:
	
	To get all a elements in the document with a "info-links" class:
    getElementsByClassName(document, "a", "info-links");
    
	To get all div elements within the element named "container", with a "col" and a "left" class:
    getElementsByClassName(document.getElementById("container"), "div", ["col", "left"]);
*/
// ---