function check_zip_form(){	
	if (document.form2.zip.value == ''){
		alert("Please enter your Zip Code.");
		document.form2.zip.focus();
		return false;
	}
	
	else
	{
		return true;
	}
}

function check_ebook(){
	if (document.ebook.name.value == ''){
		alert("Please enter your name.");
		document.ebook.name.focus();
		return false;
	}
	
	if (document.ebook.email.value == ''){
		alert("Please enter your email address.");
		document.ebook.email.focus();
		return false;
	}	
	if (echeck(document.ebook.email.value) == false)
	{
		document.ebook.email.focus();
		return false;
	}		
	else{
		return true;
	}

}

function echeck(email)
{
	
	var at="@"
	var dot="."
	var lat=email.indexOf(at)
	var lstr=email.length
	var ldot=email.indexOf(dot)
	
	if (email.indexOf(at)==-1){
	   alert("Please enter a valid Email address")
	   return false
	}
	
	if (email.indexOf(at)==-1 || email.indexOf(at)==0 || email.indexOf(at)==lstr){
	   alert("Please enter a valid Email address")
	   return false
	}

	if (email.indexOf(dot)==-1 || email.indexOf(dot)==0 || email.indexOf(dot)==lstr){
	    alert("Please enter a valid Email address")
		return false
	}

	 if (email.indexOf(at,(lat+1))!=-1){
		alert("Please enter a valid Email address")
		return false
	 }

	 if (email.substring(lat-1,lat)==dot || email.substring(lat+1,lat+2)==dot){
		alert("Please enter a valid Email address")
		return false
	}

	if (email.indexOf(dot,(lat+2))==-1){
		alert("Please enter a valid Email address")
		return false
	}
		
	if (email.indexOf(" ")!=-1){
		alert("Please enter a valid Email address")
		return false
	}
	
	return true;
}
	

function check_retouch()
{
	if (document.retouch.name.value == ''){
		alert ("Please enter your name.");
		document.retouch.name.focus();
		return false;
	}
	if (document.retouch.email.value == '')
	{
		alert ("Please enter your email address.");
		document.retouch.email.focus();
		return false;
	}
	if (echeck(document.retouch.email.value) == false)
	{
		document.retouch.email.focus();
		return false;
	}	
	else
	{
		return true;
	}
}

function check_datability()
{
	if (document.datability.name.value == '')
	{
		alert("Please enter your name.");
		document.datability.name.focus();
		return false;
	}
	if (document.datability.email.value == '')
	{
		alert("Please enter your email address.");
		document.datability.email.focus();
		return false;
	}
	if (echeck(document.datability.email.value) == false)
	{
		document.datability.email.focus();
		return false;
	}	
	else
	{
		return true;
	}
}

function check_contactus()
 {
		if(document.contactus.firstname.value=="")
		{
			alert("Please Enter Your First Name");
			document.contactus.firstname.focus();
			return false;
		}
		if(document.contactus.lastname.value=="")
		{
			alert("Please Enter Your Last Name");
			document.contactus.lastname.focus();
			return false;
		}
		if(document.contactus.email.value=="")
		{
			alert("Please Enter Your Email Address");
			document.contactus.email.focus();
			return false;
		}
		if (echeck(document.contactus.email.value) == false)
		{
			document.contactus.email.focus();
			return false;
		}
		if(document.contactus.phone.value=="")
		{
			alert("Please Enter A Phone Number Where You Can Be Reached.");
			document.contactus.phone.focus();
			return false;
		}
				if(document.contactus.comments.value=="")
		{
			alert("Please Enter Your Comments or Questions");
			document.contactus.comments.focus();
			return false;
		}
		
 }







function new_check_ebook(){
	if (document.ebook.name.value == ''){
		alert("Please enter your name.");
		document.ebook.name.focus();
		return false;
	}
	
	if (document.ebook.email.value == ''){
		alert("Please enter your email address.");
		document.ebook.email.focus();
		return false;
	}	

if (document.ebook.recaptcha_response_field.value == '')
{
		alert("Please enter secure code.");
		document.ebook.recaptcha_response_field.focus();
		return false;
	}		

	if (echeck(document.ebook.email.value) == false)
	{
		document.ebook.email.focus();
		return false;
	}
	else{
		return true;
	}

}