// JavaScript Document
function val_contact(){
	document.getElementById('error').style.display = 'none';
	document.getElementById('success').style.display = 'none';
	
	var name = trim(document.getElementById('cname').value);
	var email = trim(document.getElementById('cemail').value);
	var url = trim(document.getElementById('url').value);
	var mess = trim(document.getElementById('cmess').value);
	
	if(name=='' || email=='' || mess==''){
		document.getElementById('error').innerHTML = 'Please complete the required field.';
		document.getElementById('error').style.display = 'block';
		return false;
	}
	else if( !checkEmail(email) ){
		document.getElementById('error').innerHTML = 'Please provide a valid email address.';
		document.getElementById('error').style.display = 'block';
		return false;
	}
	
	send_ajax_mail(name, email, url, mess);
	
	return false;
}

function ltrim(str) { 
	for(var k = 0; k < str.length && isWhitespace(str.charAt(k)); k++);
	return str.substring(k, str.length);
}

function rtrim(str) {
	for(var j=str.length-1; j>=0 && isWhitespace(str.charAt(j)) ; j--) ;
	return str.substring(0,j+1);
}

function trim(str) {
	return ltrim(rtrim(str));
}

function isWhitespace(charToCheck) {
	var whitespaceChars = " \t\n\r\f";
	return (whitespaceChars.indexOf(charToCheck) != -1);
}

function checkEmail(emial){
	var str=emial;
	var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
	if (filter.test(str))
		return true;
	else
		return false;
}