var agt=navigator.userAgent.toLowerCase(); 
var is_nav = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1) && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1) && (agt.indexOf('webtv')==-1));
var is_mac = (agt.indexOf("mac")!=-1);
var browser_version = parseInt(navigator.appVersion);
var navVend = false;
var is_nav6 = false;
if (is_nav) {
	if (browser_version >= 5) {	is_nav6 = true };
}

var queryStringArray = top.window.location.search.substr(1).split("&");
var queryString = top.window.location.search.substr(1);

function queryValue ( key ) {
	for (var i=0; i<queryStringArray.length; i++) {
   		if (queryStringArray[i].indexOf(key) == 0) {
   			var keyArray = queryStringArray[i].split("=");
    		return keyArray[1];
   		}
  	}
	return "";
}

function swapImage(pImg) {
	var objString = pImg.src
	var locPos = objString.lastIndexOf("_")
	var locString = objString.substring(0,locPos)
	var stateString = objString.substring(locPos,objString.length)
	if (stateString == "_up.gif") {
		stateString = "_over.gif"
	} else {
		stateString = "_up.gif"
	}
	setString = locString + stateString
	pImg.src = setString
}

function CentreWindow(mypage, myname, w, h, scroll) {
var winl = ((screen.width - w) / 2) - 5;
var wint = ((screen.height - h) / 2) - 30;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',toolbar=no,resizable=no,status=no'
win = window.open(mypage, myname, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
win.window.focus();
}

function popUP(mypage, myname, w, h, pScroll) {
  var winl =  (screen.width - w) / 2;
  var wint = (screen.height - h) / 2;
  winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+pScroll+',toolbar=no,resizable=no,status=no';
  win = window.open(mypage, myname,winprops);
  if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); };
}

function popUpAll(mypage, myname, w, h, pScroll) {
  var winl =  (screen.width - w) / 2;
  var wint = (screen.height - h) / 2;
  winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+pScroll+',toolbar=yes,location=yes,status=yes,menubar=yes,resizable=yes,';
  win = window.open(mypage, myname,winprops);
  if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); };
}


function doBlur(iTem) {
	if (is_nav) {
		// don't issue blur command for netscape
	} else {
		// issue blur command to turn off box around clicked elements in explorer
		iTem.blur()
	}
}



function writeCSS(path) {
	MacIE = path + "css/mac_ie.css"; 
	MacNav = path + "css/mac_nav.css";
	WinIE = path + "css/ie.css";
	WinNav = path + "css/pc_nav.css";
	if (is_mac) {
		if(is_nav) {
		 document.write("<link rel='stylesheet' href='" + MacNav + "' type='text/css'>");
		} else {
		 document.write("<link rel='stylesheet' href='" + MacIE + "' type='text/css'>");
		}
	} else {
		if(is_nav) {
			//alert(WinNav)
		 document.write("<link rel='stylesheet' href='" + WinNav + "' type='text/css'>");
		} else {
		 document.write("<link rel='stylesheet' href='" + WinIE + "' type='text/css'>");
		}

	}
}
function createArray(size)      {

 this.length = size;
 for ( var i = 1; i <= size; i++ ) {
 this[i] = null }
 return this
}

function CheckForm() {
 
 var Alert = new createArray(4)
 Alert[0]="Please select your title";
 Alert[1]="Please enter your first name";
 Alert[2]="Please enter your surname";
 Alert[3]="Please enter your e-mail address";
 Alert[4]="Please enter your message";
	
if (document.forms[0].title.value=="") {
  	alert(Alert[0]); 
	document.forms[0].title.focus(); return false; 
	} else {
if (document.forms[0].firstname.value=="") {
  alert(Alert[1]); document.forms[0].firstname.focus(); return false; 
	} else {
if (document.forms[0].surname.value=="") {
  	 alert(Alert[2]); document.forms[0].surname.focus(); return false; 
 	} else {
if (document.forms[0].email.value=="") {
	   alert(Alert[3]); document.forms[0].email.focus(); return false; 
	 } 	else {  
if (document.forms[0].message.value=="") {
	   alert(Alert[4]); document.forms[0].email.focus(); return false; 
	 } 
	else {  
 	return true; 
}
}
}
}
}
}