function checkfields()	
{
 
  if (emailform.Name.value=="")
		 {
		  alert("The Enter your name.") ;
		  emailform.Name.focus();
		  return false; 
		 }
	
	 if (emailform.Address.value=="")
		 {
		  alert("Please fill in your Address.") ;
		  emailform.Address.focus();
		  return false; 
		 }
	if (emailform.City.value=="")
		 {
		  alert("Please fill in your City.") ;
		  emailform.City.focus();
		  return false; 
		 }		 
		 
	 if (emailform.Pin_Code.value=="")
		 {
		  alert("Please fill in your Pin Code.") ;
		  emailform.Pin_Code.focus();
		  return false; 
		 }
	 if (emailform.Tel_No.value=="")
		 {
		  alert("Please enter your Telphone No.") ;
		  emailform.Tel_No.focus();
		  return false; 
		 }
	if(emailform.email.value=="" )
		{
		 alert("Please fill in the Email Address");
		 emailform.email.focus();
		return false;
		}

	if (emailCheck(emailform.email.value)==false)	
		{
 	 	emailform.email.focus();
		return false;
		}
	

	 if (emailform.Services.value=="")
		 {
		  alert("Please write your message.") ;
		  emailform.Services.focus();
		  return false; 
		 }

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


if (user.match(userPat)==null) {
    // user is not valid
    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;
}