function checkform(thisform)
	{		
	// This function checks the entire form before it is submitted
	// note: This function needs to be customized to fit your form
	with (thisform)
		{
			if (Empty(thisform.FirstName,"Please enter your full name")) {thisform.FirstName.focus(); return false;}
			else if (Empty(thisform.Position,"Please enter your position")) {thisform.Position.focus(); return false;}
			else if (Empty(thisform.CompanyName,"Please enter your company name")) {thisform.CompanyName.focus(); return false;}
			else if (Empty(thisform.Address,"Please enter your address")) {thisform.Address.focus(); return false;}
			else if (!isValidTel(thisform.ContactNumber,"Please enter a valid telephone number")) {thisform.ContactNumber.focus(); return false;}
			else if (!isValidEmail(thisform.Email,"Please enter a valid E-mail address")) {thisform.Email.focus(); return false;}
			else if (Empty(thisform.ProjectDetails,"Please enter a comment / message!")) {thisform.ProjectDetails.focus(); return false;}
			else {
					var newTestVal = "submit" + "ok123";
					thisform.testURL.value = newTestVal;
					
					var newAction = "respon" + "se.cfm";
					thisform.action = newAction;
					thisform.submit();
					}
		
		}
}	

function Empty(entered, alertbox){
		// checks a value is specified (not empty)
		with (entered)
			{
			if (value==null || value=="")
				{if (alertbox!="") {alert(alertbox);} return true;}
			else {return false;}
			}
		}
		
function isValidEmail(entered, alertbox) {
// checks for a valid email address
with (entered)
	{
	apos=value.indexOf("@"); 
	dotpos=value.lastIndexOf(".");
	lastpos=value.length-1;
	if (apos<1 || dotpos-apos<2 || lastpos-dotpos>3 || lastpos-dotpos<2) 
		{if (alertbox) {alert(alertbox);} return false;}
	else 
		{return true;}
	}
}

/**
 * DHTML phone number validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}
function trim(s)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not a whitespace, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (c != " ") returnString += c;
    }
    return returnString;
}
function stripCharsInBag(s, bag)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone){
	var bracket=3
	strPhone=trim(strPhone)
	if(strPhone.indexOf("+")>1) return false
	if(strPhone.indexOf("-")!=-1)bracket=bracket+1
	if(strPhone.indexOf("(")!=-1 && strPhone.indexOf("(")>bracket)return false
	var brchr=strPhone.indexOf("(")
	if(strPhone.indexOf("(")!=-1 && strPhone.charAt(brchr+2)!=")")return false
	if(strPhone.indexOf("(")==-1 && strPhone.indexOf(")")!=-1)return false
	s=stripCharsInBag(strPhone,validWorldPhoneChars);
	return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function isValidTel(theTel, alertbox){
	var Phone= theTel;
	if (checkInternationalPhone(Phone.value)==false){
		if (alertbox) {alert(alertbox);} return false;}
	else 
		{return true;}
		
 }