function ContactForm(formname)
{
	if(formname.name.value=="" || formname.name.value=="Name")
	{	
		document.getElementById('error_msg').innerHTML='Please enter your name.';
		formname.name.focus();
		formname.name.value='';
		return false;
	}
	else if(formname.emailAddress.value=="" || formname.emailAddress.value=="Email Address")
	{	
		document.getElementById('error_msg').innerHTML='Please enter your email address.';
		formname.emailAddress.focus();
		formname.emailAddress.value='';
		return false;
	}
	else if(!isEmail(formname.emailAddress.value))
	{
		document.getElementById('error_msg').innerHTML='Please enter a valid email address.';
		formname.emailAddress.focus();
		return false;
	}
	else if(formname.message.value=='' || formname.message.value=='Your Message')
	{
		document.getElementById('error_msg').innerHTML='Please enter your message.';
		formname.message.focus();
		return false;
	}
	/*else if(formname.BotCheck.value!=formname.extra1.value)
	{	
		document.getElementById('error_msg').innerHTML='Please enter correct verification code.';
		formname.BotCheck.focus();
		return false;
	}
	*/
}
 
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 captcha
//var RandomNumber1 = randomString();
//var RandomNumber2 = randomString();
//var SumRandomNumber = parseInt(RandomNumber1) + parseInt(RandomNumber2);
 
 
/*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 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;
}