//determine browser and OS

var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;

if (checkIt('konqueror'))
{
	browser = "Konqueror";
	OS = "Linux";
}
else if (checkIt('omniweb')) browser = "OmniWeb"
else if (checkIt('opera')) browser = "Opera"
else if (checkIt('webtv')) browser = "WebTV";
else if (checkIt('icab')) browser = "iCab"
else if (checkIt('msie')) browser = "Internet Explorer"
else if (!checkIt('compatible'))
{
	browser = "Netscape Navigator"
	version = detect.charAt(8);
}
else browser = "An unknown browser";

if (!version) version = detect.charAt(place + thestring.length);

if (!OS)
{
	if (checkIt('linux')) OS = "Linux";
	else if (checkIt('x11')) OS = "Unix";
	else if (checkIt('mac')) OS = "Mac"
	else if (checkIt('win')) OS = "Windows"
	else OS = "an unknown operating system";
}

function checkIt(string)
{
	place = detect.indexOf(string) + 1;
	thestring = string;
	return place;
	
}

if (OS == "Mac")
{
	if (browser == "Netscape Navigator")
	{
		if (version >= "5")
			{document.write("<link REL='stylesheet' HREF='css/ns_mac.css' TYPE='text/css'>");}
			
		else
			{document.write("<link REL='stylesheet' HREF='css/ns_mac.css' TYPE='text/css'>");}
	}
	else
	{
		if (version >= "5")
			{document.write("<link REL='stylesheet' HREF='css/ie_mac.css' TYPE='text/css'>");}
		else
			{document.write("<link REL='stylesheet' HREF='css/ns_mac.css' TYPE='text/css'>");}
	}
}
else
{
	if (browser == "Netscape Navigator")
	{
		if (version >= "5")
			{document.write("<link REL='stylesheet' HREF='css/ie_win.css' TYPE='text/css'>");}
		else
			{document.write("<link REL='stylesheet' HREF='css/ns_win.css' TYPE='text/css'>");
}	
	}
	else
		{document.write("<link REL='stylesheet' HREF='css/ie_win.css' TYPE='text/css'>");}
}


// pop up forgot password
function password(url) {
	self.name = "opener";
    	remote = open(url, "password", "width=398,height=390,left=150,top=250,scrollbars=yes,");
}

// pop up forgot password
function vehicle(url) {
	self.name = "opener";
    	remote = open(url, "vehicle", "width=765,height=350,left=150,top=250,scrollbars=yes,");
}
// pop up forgot password
function wide(url) {
	self.name = "opener";
    	remote = open(url, "wide", "width=595,height=555,left=50,top=100,scrollbars=yes,");
}
// pop up forgot password
function external(url) {
	self.name = "opener";
    	remote = open(url, "external", "width=595,height=555,left=50,top=100,toolbar,location,directories,status,scrollbars,menubar,resizable,");
}
// pop up forgot password
function vehicleprice(url) {
	self.name = "opener";
    	remote = open(url, "vehicle", "width=765,height=350,left=150,top=250,scrollbars=yes,resizable,");
}

function checkSurnameLength(elem){
	var str = elem.value;
	if(str.length < 4 && str.length > 1) {
		alert("Your surname contains less than 4 letters, is this correct?");
		//return false;
	} 
	//else {
	//	return true;
	//}
}


 var bSubmitDone = false;
 
 function submitForm(myForm, button) {

      if (!bSubmitDone) {
         bSubmitDone = true;
         button.disabled = true;
         myForm.submit();
      } 
      else {
        alert ("Submitting...please wait.");
      }
   return true;
 }