// JavaScript Document

function validatephone(phone) {
	 var maintainplus = '';
 	var numval = phone.value
 	if ( numval.charAt(0)=='+' ){ var maintainplus = '+';}
 	curphonevar = numval.replace(/[\\A-Za-z!"£$%^&*+_={};:'@#~,.¦\/<>?|`¬\]\[]/g,'');
 	phone.value = maintainplus + curphonevar;
 	var maintainplus = '';
 	phone.focus;
}





function contact_validation(form)
{

	if(form.full_name.value=="")
	{
		alert("Please enter your full name");
		form.full_name.focus();
		return false;
	}
	
	
	var emailStr=form.email.value
	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) {
		alert("Email address seems incorrect (check @ and .'s)")
		 form.email.focus();
		return (false)
	}
	var user=matchArray[1]
	var domain=matchArray[2]
	if (user.match(userPat)==null) {
		alert("The username doesn't seem to be valid.")
		 form.email.focus();
		return (false)
	}
	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) {
		// this is an IP address
		  for (var i=1;i<=4;i++) {
			if (IPArray[i]>255) {
				alert("Destination IP address is invalid!")
				 form.email.focus();
			return (false)
			}
		}
		return (true)
	}
	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		alert("The domain name doesn't seem to be valid.")
		 form.email.focus();
		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) {
	   alert("The address must end in a three-letter domain, or two letter country.")
		form.email.focus();
	   return (false)
	}
	if (len<2) {
	   var errStr="This address is missing a hostname!"
	   alert(errStr)
	   form.email.focus();
	   return (false)
	}

  if(form.subject.value=="")
	{
		alert("Please enter your subject");
		form.subject.focus();
		return false;
	} 
	 if(form.message.value=="")
	{
		alert("Please enter your message");
		form.message.focus();
		return false;
	} 
		
return true;
}