// JavaScript Document MailForm by Valuemedia.biz

function checkform() 
{
   	if (document.contact.name.value.length == 0) 
   	{
     	alert("Please fill put your name");
		document.contact.name.focus();
	 	return false;
   	}
   	else if (document.contact.email.value.length == 0) 
   	{
     	alert("Please enter your email address");
		document.contact.email.focus();
	 	return false;
   	}
  	else if (!emailCheck(document.contact.email.value)) 
   	{
     	alert("E-mail format is not valid !");
		document.contact.email.focus();
	 	return false;
   	}
   	else if (document.contact.telephone.value.length == 0) 
   	{
     	alert("Please put your telephone number");
		document.contact.telephone.focus();
	 	return false;
   	}
   	else if (document.contact.inquiry.value.length == 0) 
   	{
     	alert("Please put your inquiry");
		document.contact.inquiry.focus();
	 	return false;
   	}
   	else return true;
 }
  
function emailCheck (emailStr) 
{
	var emailPat=/^(.+)@(.+)$/
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
	var validChars="\[^\\s" + specialChars + "\]"
	var quotedUser="(\"[^\"]*\")"
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
	var atom=validChars + '+'
	var word="(" + atom + "|" + quotedUser + ")"
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
	var matchArray=emailStr.match(emailPat)
	if (matchArray==null) 
	{
		return false
	}
	var user=matchArray[1]
	var domain=matchArray[2]

	if (user.match(userPat)==null) 
	{
    	return false
	}

	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) 
	{
		for (var i=1;i<=4;i++) 
		{
			if (IPArray[i]>255) 
			{
				return false
			}
		}
		return true
	}

	var domainArray=domain.match(domainPat)

	if (domainArray==null) 
	{
    	return false
	}

	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length
	if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3) 
	{
		return false
	}

	if (len<2) 
	{
		return false
	}
	return true;
}