<!--contact validation-->
var testresults1
function checkemail1(){
var str1=document.form5.Email.value
var filter1=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
if (filter1.test(str1))
testresults1=true
else{
alert("Please input a valid email address!")
testresults1=false
}
return (testresults1)
}
function check_contact()
{
  	
	if( document.form5.FirstName.value == "" )
	{ 
		alert("Please enter your first name");
		document.form5.FirstName.focus()
		return false;
	} 
		if( document.form5.LastName.value == "" )
	{ 
		alert("Please enter your last name");
		document.form5.LastName.focus()
		return false;
	} 
		if( document.form5.Email.value == "" )
	{ 
		alert("Please enter email address ");
		document.form5.Email.focus()
		return false;
	} 
	if( document.form5.Message.value == "" )
	{ 
		alert("Please enter a message/comment ");
		document.form5.Message.focus()
		return false;
	} 
	if( document.form5.code.value == "" )
	{ 
		alert("Please enter verification letters ");
		document.form5.code.focus()
		return false;
	} 
  	return checkemail1()	 
}
<!--end-->
<!--login validation-->
function check_login()
{
	if( document.form1.UserName.value == "" )
	{ 
		alert("Please enter UserName ");
		document.form1.UserName.focus()
		return false;
	} 
	if( document.form1.Passwd.value == "" )
	{ 
		alert("Please enter Password ");
		document.form1.Passwd.focus()
		return false;
	} 
	if( document.form1.code.value == "" )
	{ 
		alert("Please enter Verification Letters ");
		document.form1.code.focus()
		return false;
	} 
}
<!--end-->
<!--registration validation-->
var testresults
function checkemail(){
var str=document.form1.Email.value
var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
if (filter.test(str))
testresults=true
else{
alert("Please input a valid email address!")
testresults=false
}
return (testresults)
}
function check_registration()
{
  	
	if( document.form1.ContactName.value == "" )
	{ 
		alert("Please enter a contact name");
		document.form1.ContactName.focus()
		return false;
	} 
		if( document.form1.CoName.value == "" )
	{ 
		alert("Please enter your pawn shop name");
		document.form1.CoName.focus()
		return false;
	} 
		if( document.form1.LicenseNo.value == "" )
	{ 
		alert("Please enter your business license number");
		document.form1.LicenseNo.focus()
		return false;
	} 
		if( (document.form1.Phone1.value == "") && (document.form1.Phone2.value == "") && (document.form1.Phone3.value == ""))
	{ 
		alert("Please enter your pawn shop phone number");
		document.form1.Phone1.focus()
		return false;
	} 
		if( (document.form1.Phone1.value == "") || (document.form1.Phone2.value == "") || (document.form1.Phone3.value == ""))
	{ 
		alert("Please enter a complete phone number");
		document.form1.Phone1.focus()
		return false;
	} 
		if( document.form1.Email.value == "" )
	{ 
		alert("Please enter your email address ");
		document.form1.Email.focus()
		return false;
	} 
		if( document.form1.CoAddress.value == "" )
	{ 
		alert("Please enter your pawn shop address");
		document.form1.CoAddress.focus()
		return false;
	} 
		if( document.form1.City.value == "" )
	{ 
		alert("Please enter your pawn shop city");
		document.form1.City.focus()
		return false;
	} 
		if( document.form1.Zip.value == "" )
	{ 
		alert("Please enter your pawn shop zip");
		document.form1.Zip.focus()
		return false;
	} 
  	return checkemail()	 
}
<!--end-->