function isNumberKey(evt)
{
	var charCode = (evt.which) ? evt.which : event.keyCode
	if(charCode == 45 || charCode == 43 || charCode==127 || charCode== 8)
	{	
		return true; 
	}
	if(charCode = 31 && (charCode < 48 || charCode > 57))
	{
		return false;
	}
    return true;
}

function randomString()
{
	//var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
	var chars = "123456789";
	//var string_length = 6;
	var string_length = 1;
	var randomstring = '';
	for (var i=0; i<string_length; i++) {
		var rnum = Math.floor(Math.random() * chars.length);
		randomstring += chars.substring(rnum,rnum+1);
	}
	//alert(randomstring);
	//document.getElementById("extraCaptcha").value = randomstring;
	//console.log(randomstring);
	return randomstring;
}

function CheckFields(form)
{
	var error_msg = document.getElementById("error_msg");
	
	if(form.name.value=='')
	{
		error_msg.innerHTML='Please enter your name.';
		form.name.focus();
		return false;
	}
	if(form.email.value=='')
	{
		error_msg.innerHTML='Please enter your email address.';
		form.email.focus();
		return false;
	}
	if(!isEmail(form.email.value))
	{
		error_msg.innerHTML='Please enter a valid email address.';
		form.email.focus();
		return false;
	}
	if(form.country.value=='')
	{
		error_msg.innerHTML='Please enter your country name.';
		form.country.focus();
		return false;
	}
	if(form.phone.value=='')
	{
		error_msg.innerHTML='Please enter your phone number.';
		form.phone.focus();
		return false;
	}
	if(form.description.value=='')
	{
		error_msg.innerHTML='Please enter your message.';
		form.description.focus();
		return false;
	}
	if(form.captchatext.value!=form.extra1.value)
	{	
		error_msg.innerHTML='Please enter correct verification code.';
		form.captchatext.focus();
		return false;
	}
	error_msg.innerHTML='';
	return true;
}

function isEmail(em_address) 
{
	var email=/^[A-Za-z0-9]+([_\.-][A-Za-z0-9]+)*@[A-Za-z0-9]+([_\.-][A-Za-z0-9]+)*\.([A-Za-z]){2,4}$/i;
	return (email.test(em_address))
}

//For Quotation Form
var RandomNumber1 = randomString();
var RandomNumber2 = randomString();
var SumRandomNumber = parseInt(RandomNumber1) + parseInt(RandomNumber2);