function validationfrm(theForm)
{
     if (theForm.tbfname.value == "") {
		alert("Please Enter FirstName");
        theForm.tbfname.focus();
        return false;
  }

 
	if (theForm.tblname.value == "") {
		alert("Please Enter Last Name");
        theForm.tblname.focus();
        return false;
	}
	
	
	if (theForm.tbcompany.value == "") {
		alert("Please Enter Company Name");
        theForm.tbcompany.focus();
        return false;
	}

	if (theForm.tbaddress.value == "") {
		alert("Please Enter Address");
        theForm.tbaddress.focus();
        return false;
	}

	if (theForm.tbcity.value == "") {
		alert("Please Enter City");
        theForm.tbcity.focus();
        return false;
	}

	if (theForm.ltstate.value == "N/A") {
		alert("Please Select State");
        theForm.ltstate.focus();
        return false;
	}

	if (theForm.tbzip.value == "") {
		alert("Please Enter Zip Code");
        theForm.tbzip.focus();
        return false;
	}
	
	if (theForm.tbzip.value.length > 0)
 {
    if (!(validateUSZip(theForm.tbzip.value)))
    {    alert("Invalid Zip Code");  
        theForm.tbzip.focus();
        return false;
    }
  }	
	
	
	if (theForm.tbtelephone.value == "") {
		alert("Please Enter Phone Number");
        theForm.tbtelephone.focus();
        return false;
	}


if (theForm.tbtelephone.value.length > 0)
 {
    if (!(check_usphone(theForm.tbtelephone.value)))
    {    alert("Invalid Phone Number");  
        theForm.tbtelephone.focus();
        return false;
    }
  }	

if (theForm.tbfax.value.length > 0)
 {
    if (!(check_usphone(theForm.tbfax.value)))
    {    alert("Invalid Fax Number");  
        theForm.tbfax.focus();
        return false;
    }
  }
  
  
if (theForm.tbemail.value.length == 0)

    {
        alert("Please Enter Email");
        theForm.tbemail.focus();
        return false;
    }
		

if (theForm.tbemail.value.length > 0)
 {
    if (!(emailCheck (theForm.tbemail.value)))
    {
        theForm.tbemail.focus();
        return false;
    }
  }



	if (theForm.ltreference.value == "N/A") {
		alert("Please select where you hear about us");
        theForm.ltreference.focus();
        return false;
	}
		
if(theForm.tbsource2.style.visibility=='visible' && theForm.tbsource2.value.length == 0)

    {   alert("Please enter a value for the \""+window.lbsource2.innerHTML+"\" field.");
        theForm.tbsource2.focus();
        return false;

    }
    
if(theForm.tbsource3.style.visibility=='visible' && theForm.tbsource3.value.length == 0)

    {   alert("Please enter a value for the \""+window.lbsource3.innerHTML+"\"field.");
        theForm.tbsource3.focus();
        return false;

    }
	

		
if (!((theForm.chktype1.checked) || (theForm.chktype2.checked)  || (theForm.chktype3.checked)  || (theForm.chktype4.checked)  || (theForm.chktype5.checked)  || (theForm.chktype6.checked)  || (theForm.chktype7.checked) || (theForm.chktype8.checked) || (theForm.chktype9.checked) || (theForm.chktype10.checked) || (theForm.chktype11.checked) || (theForm.chktype12.checked) || (theForm.chktype13.checked) || (theForm.chktype14.checked) || (theForm.chktype15.checked)))  {
//if (!(theForm.chktype1.checked)) {
		alert("Please select a business type");
       
        return false;
	}
	
	if ((theForm.tbseccode.value == "")||(theForm.tbseccode.value!=theForm.SecurityCode.value)) {
		alert("Please correctly enter the security code");
        theForm.tbseccode.focus();
        return false;
	}		

return true;
    
}




function emailCheck (emailStr) {

var emailPat=/^(.+)@(.+)$/

var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"

var validChars="\[^\\s" + specialChars + "\]"

var firstChars=validChars

var quotedUser="(\"[^\"]*\")"

var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/

var atom="(" + firstChars + 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 (domArr[domArr.length-1].length==2 && len < 3) {
   var errStr="This address ends in two characters, which is a country"
   errStr+=" code.  Country codes must be preceded by ";
   errStr+="a hostname and category (like com, co, pub, pu, etc.)";
   alert(errStr);
   return false;
}

if (domArr[domArr.length-1].length==3 && len < 2) {
   var errStr="This address is missing a hostname!"
   alert(errStr);
   return false;
}

return true;
}

function check_usphone(phonenumber) 
{ 

var objRegExp1  =/^[]*[1]{0,1}[-]{0,1}[ ]*[(]{0,1}[ ]*[0-9]{3,3}[ ]*[)]{0,1}[-]{0,1}[ ]*[0-9]{3,3}[ ]*[-]{0,1}[ ]*[0-9]{4,4}[ ]*$/; 
//var objRegExp2  =/^[ ]*[0-9]{3,3}[ ]*[-]{0,1}[ ]*[0-9]{4,4}[ ]*$/
return (objRegExp1.test(phonenumber));
/************************************************
if(!useareacode)useareacode=1;
if((phonenumber.match(/^[ ]*[(]{0,1}[ ]*[0-9]{3,3}[ ]*[)]{0,1}[-]{0,1}[ ]*[0-9]{3,3}[ ]*[-]{0,1}[ ]*[0-9]{4,4}[ ]*$/)==null) && ((useareacode!=1) && (phonenumber.match(/^[ ]*[0-9]{3,3}[ ]*[-]{0,1}[ ]*[0-9]{4,4}[ ]*$/)==null))) return false; 
return true; 
//The function will return true for any 
// alphanumeric string with the following 
// sequence of characters: 
// any number of spaces [optional], a single 
// open parentheses [optional], any number of 
// spaces [optional], 3 digits (area 
// code), any number of spaces [optional], a 
// single close parentheses [optional], a single 
// dash [optional], any number of spaces 
// [optional], 3 digits, any number of spaces 
// [optional], a single dash [optional], any 
// number of spaces [optional], 4 digits, any 
// number of spaces [optional]. 

*************************************************/
} 
function validateUSZip( strValue ) {
/************************************************
DESCRIPTION: Validates that a string a United
  States zip code in 5 digit format or zip+4
  format. 99999 or 99999-9999

PARAMETERS:
   strValue - String to be tested for validity

RETURNS:
   True if valid, otherwise false.

*************************************************/
var objRegExp  = /(^\d{5}$)|(^\d{5}-\d{4}$)/;

  //check for valid US Zipcode
  return objRegExp.test(strValue);
}