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) {
		alert("Email address seems incorrect (check @ and .'s).")
		return false
	}
	var user=matchArray[1]
	var domain=matchArray[2]

	if (user.match(userPat)==null) {
    	alert("The username doesn't seem to be valid.")
    	return false
	}
	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) {
		for (var i=1;i<=4;i++) {
	    	if (IPArray[i]>255) {
	        	alert("Destination IP address is invalid!")
				return false
	    	}
    	}
    	return true
	}
	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		alert("The domain name doesn't seem to be valid.")
    	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.")
   		return false
	}
	if (len<2) {
   		var errStr="This address is missing a hostname!"
   		alert(errStr)
   		return false
	}
    return true;
}
function validate(obj)
{
	var msg = "";
	var valid = true;

	if (obj.email.value == "")
	{
		msg += "Email\n"
		valid = false;
	}
	else if (!emailCheck(obj.email.value))
	{
		msg += "Email\n"
		valid = false;
	}
	if (obj.company.value == "")
	{
		msg += "Company\n"
		valid = false;
	}
	if (obj.name.value == "")
	{
		msg += "Contact\n"
		valid = false;
	}
	if (obj.tel.value == "")
	{
		msg += "Phone\n"
		valid = false;
	}
	if (obj.fax.value == "")
	{
		msg += "Fax\n"
		valid = false;
	}
	if (msg != "")
		alert("You must enter the following\n" + msg);
	return valid;
}