// JavaScript Document
function isFirstCharASpace(ch)
{
	if(ch.charCodeAt(0) == 32)
		return true;
	else
		return false;
}

function leftTrim(a)
{
	if(a == "")
		return(a);
	if(isFirstCharASpace(a))
		return(leftTrim(a.substring(1,a.length)));		
	else
		return(a);
}

function rightTrim(a)
{
	if(a == "")
		return(a);
	if(isFirstCharASpace(a.substring(a.length-1, a.length)))
		return(rightTrim(a.substring(0, a.length-1)));
	else
		return(a);
}

function removeExtraSpaces(str)
{
	str = leftTrim(str);
	str = rightTrim(str);
	if(str == "")
		return(str);
	for(cpt=0; cpt<str.length; cpt++)
	{
		if(str.charCodeAt(cpt) == 32)
			break;
	}
	if(cpt==str.length)
		return(str);			
	else
		return(str.substring(0, cpt+1) + removeExtraSpaces(str.substring(cpt+1, str.length)));
}

function TrimAfterBlur(form_element)
{
	form_element.value = removeExtraSpaces(form_element.value);
}

function formcheck(form_name)
{
	form_object = document.forms[form_name];
	if(form_object.contact_firstname.value == "")	
	{
		alert("Please enter your first name");
		return(false);
	}
	if(form_object.contact_lastname.value == "")
	{
		alert("Please enter your last name");
		return(false);
	}
	if(form_object.contact_job_title.value == "")
	{
		alert("Please enter your job title");
		return(false);
	}
	if(form_object.contact_company.value == "")
	{
		alert("Please enter your company");
		return(false);
	}
	
	if (!validateEmail(form_object.contact_email.value,1,0)) 
	{
  		alert('Email address is invalid or was not entered');
		return(false);
	} 
	
	if(form_object.contact_comments.value == "")
	{
		alert("Please give some comments or suggestions");
		return(false);
	}
	
	form_object.contact_comments.value = removeExtraSpaces(form_object.contact_comments.value);
	
	numElements = form_object.elements.length;
	for(i = 0; i < numElements; i++)
	{
		if(form_object.elements[i].name == "contact_title" && form_object.elements[i].checked)
		{	
			switch(form_object.elements[i].value)
			{
				case 'mr': 
					form_object.title.value = "Mr.";
					break;
				case 'mrs': 
					form_object.title.value = "Mrs.";
					break;
				case 'ms': 
					form_object.title.value = "Ms.";
					break;
				case 'dr': 
					form_object.title.value = "Dr.";
					break;
				case 'professor': 
					form_object.title.value = "Professor";
					break;
			}
		}
	}
	/*if(form_object.country.value == "0")
	{
		alert("Please enter your country");
		return(false);
	}
		
	validRadio = false;
	indexOfRadio = 0;
	numElements = form_object.elements.length;
	for(i = 0; i < numElements; i++)
	{
		if(form_object.elements[i].name == "radio_button" && form_object.elements[i].checked)
		{	
			validRadio = true;
			indexOfRadio = i;
		}
	}
	if(!validRadio)
	{
		alert("Select some radio button.");
		return(false);
	}*/
		
	form_object.submit();
}

// Email Validation Javascript
// copyright 23rd March 2003, by Stephen Chapman, Felgall Pty Ltd

// You have permission to copy and use this javascript provided that
// the content of the script is not changed in any way.

function validateEmail(addr,man,db) {
	if (addr == '' && man) {
	   if (db) alert('email address is mandatory');
	   return false;
	}
	var invalidChars = '\/\'\\ ";:?!()[]\{\}^|';
	for (i=0; i<invalidChars.length; i++) {
	   if (addr.indexOf(invalidChars.charAt(i),0) > -1) {
		  if (db) alert('email address contains invalid characters');
		  return false;
	   }
	}
	for (i=0; i<addr.length; i++) {
	   if (addr.charCodeAt(i)>127) {
		  if (db) alert("email address contains non ascii characters.");
		  return false;
	   }
	}
	
	var atPos = addr.indexOf('@',0);
	if (atPos == -1) {
	   if (db) alert('email address must contain an @');
	   return false;
	}
	if (atPos == 0) {
	   if (db) alert('email address must not start with @');
	   return false;
	}
	if (addr.indexOf('@', atPos + 1) > - 1) {
	   if (db) alert('email address must contain only one @');
	   return false;
	}
	if (addr.indexOf('.', atPos) == -1) {
	   if (db) alert('email address must contain a period in the domain name');
	   return false;
	}
	if (addr.indexOf('@.',0) != -1) {
	   if (db) alert('period must not immediately follow @ in email address');
	   return false;
	}
	if (addr.indexOf('.@',0) != -1){
	   if (db) alert('period must not immediately precede @ in email address');
	   return false;
	}
	if (addr.indexOf('..',0) != -1) {
	   if (db) alert('two periods must not be adjacent in email address');
	   return false;
	}
	return true;
}