function check_contact() {

var valid = true;
var errore_text = "";
var name = document.getElementById('name').value;
var address = document.getElementById('address').value;
var requirement = document.getElementById('requirement').value;
var phone_form = checkMobilePhone(document.getElementById('phone').value);
var email_form = checkFormEmail(document.getElementById('email').value);
id = 1;
if(name == "") {
	valid = false
	errore_text = errore_text + id + ".سһ͹ \n";id++; 
}
if(address == "") {
	valid = false;
	errore_text = errore_text + id + ".سһ͹ \n";id++; 
}	
if(phone_form != true) {
	valid = false;
	errore_text = errore_text + id + ".سһ͹ Ѿ ١ͧ \n";id++; 
}
if(email_form != true) {
	valid = false;
	errore_text = errore_text + id + ".سһ͹ ١ͧ\n";
}
if(requirement == "") {
	valid = false;
	errore_text = errore_text + id + ".سһ͹ ͧ \n";id++; 
}
 
if(valid == false) {
	alert(errore_text);
	return false;
}else {
	return true;
}
}

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

function checkMobilePhone(phone_number)
{
	if(phone_number != "")
	{
		if((phone_number.length >= 7) && (phone_number.length <=10)){
			return true;
		}else {
			return false;
		}
	}
}