//function to check for valid email address
function check_email(e){
	ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";
	
	for(i=0; i < e.length ;i++){
		if(ok.indexOf(e.charAt(i))<0){ 
			return false;
		}
	} 
	
	if (document.images) {
		re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
		re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
		if (!e.match(re) && e.match(re_two)) {
			return (-1);
		} 
	}
	
}

//validation for newsletter subscribe form	
function check_subscribe(){
	if((document.forms['subscribe'].name.value == '') || (document.forms['subscribe'].name.value == 'Name')){
		alert("Please enter your name");
		return false;
	}
	if((document.forms['subscribe'].email.value == '') || (document.forms['subscribe'].email.value == 'Email')){
		alert("Please enter your email");
		return false;
	}
	//if((document.forms['subscribe'].organization.value == '') || (document.forms['subscribe'].organization.value == 'Organization')){
	//	alert("Please enter your email");
	//	return false;
	//}
	
	var email_check = check_email(document.forms['subscribe'].elements['email'].value);

	if(!email_check){
		alert("The email you entered is not a valid email address");
		return false;
	}	
}

//function to clear form vaules when user clicks in them
function clearDefault(el) {
  if (el.defaultValue==el.value) el.value = "";
}