/* (c) Jaro Nemcok */

function validate(myField,rexp,name) 
{
    if ((rexp.test(myField.value))||(myField.value==""))
	{
	return true;
	}
    else 
	{
	alert('Invalid entry for ' + name + '.');
	return false; 
	}
}

function require(myField,name) 
{
    if (myField.value != "")
	{
	return true;
	}
    else 
	{
	alert(name + ' is a required field'); 
	return false; 
	}
}

function check_cc(myForm) 
{
	digits	= "0123456789";

	if (myForm.forma.value != "CC") return true;

	if (myForm.type.value == "") 
	{
		alert('Card Type is a required field'); 
		return false; 
	}

	if (myForm.number.value == "") 
	{
		alert('Credit Card # is a required field'); 
		return false; 
	}

	if (myForm.number.value.length != 16 && !(myForm.number.value.length == 15 && myForm.type.value == "AMEX") ) 
	{
		alert('Invalid entry for Credit Card #'); 
		return false; 
	}

	for (i = 0; i < myForm.number.value.length; i++)
	{
		if (	digits.indexOf(myForm.number.value.substr(i,1)) == -1 )
		{ 
			alert('Invalid entry for Credit Card #'); 
			return false; 
		}
	}

	if (myForm.sec_code.value == "") 
	{
		alert('Security Code is a required field'); 
		return false; 
	}

	if (myForm.sec_code.value.length != 4 && myForm.sec_code.value.length != 3 ) 
	{
		alert('Invalid entry for Security Code'); 
		return false; 
	}

	for (i = 0; i < myForm.sec_code.value.length; i++)
	{
		if (	digits.indexOf(myForm.sec_code.value.substr(i,1)) == -1 )
		{ 
			alert('Invalid entry for Security Code'); 
			return false; 
		}
	}

	if (myForm.valid_to_year.value < 2010) 
	{
		alert('Invalid entry for Valid To'); 
		return false; 
	}
	if (myForm.valid_to_year.value > 2010) 
	{
		return true; 
	}
	if (myForm.valid_to_month.value < 09) 
	{
		alert('Invalid entry for Valid To'); 
		return false; 
	}

	return true;
}

function takeZeroOff(nmb)
{
 for (i = 0; i < nmb.length; i++)
 {
	if (nmb.substr(0,1) == "0")
	{
		nmb = nmb.substr(1,nmb.length-1);
	}
 }
 return nmb
}

function check_fields(form)
{	
	var alphabeth;
	var digits;
	var emailchar;
	var zipchar;
	var alrtmsg;
	var err;
	var nerr;
	var nat;
	var maxlen;

	alphabeth= "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	cz_sk_alphabeth= "¾šè�žýáíéúäòôùø켊È�ŽÝÁÍÉÚÒØÌ";
	digits	= "0123456789";
	emailchar= "@_-.";
	loginchar= "_-.";
	zipchar	= " -";
	alrtmsg	= "";
	err	= 0;
	nerr	= 0;
	nat	= 0;
	maxlen	= 1000;

// nick name 
	if(form.login.value=="")
	{	alrtmsg=alrtmsg+"Enter your login name.\n";
		err++;
	}
	nerr = false;
	for (i = 0; i < form.login.value.length; i++)
	{
		if (	digits.indexOf(form.login.value.substr(i,1)) == -1 && 
			loginchar.indexOf(form.login.value.substr(i,1)) == -1 &&
			(alphabeth.indexOf(form.login.value.substr(i,1).toUpperCase()) == -1))
		{ 
			nerr++;
		}
	}
	if (nerr==1)
	{
		alrtmsg=alrtmsg+"1 invalid character in login name.\n";
		err++;
	}
	if (nerr>1 && nerr<5)
	{
		alrtmsg=alrtmsg+nerr+" invalid characters in login name.\n";
		err++;
	}
	if (nerr>=5)
	{
		alrtmsg=alrtmsg+nerr+" invalid characters in login name.\n";
		err++;
	}

// password 
	nerr	= 0;
	if((form.password.value==form.password2.value) && (form.password.value!="none"))
	{
		if(form.password.value=="")
		{	alrtmsg=alrtmsg+"Missing password input.\n";
			err++;
		}
		if ((form.password.value!="") && (form.password.value.length < 6))
		{ 
			alrtmsg=alrtmsg+"Password length must be at least 6 characters.\n";
			err++;
			form.password.value="";
			form.password2.value="";
		}
		if (form.password.value.length > 20)
		{ 
			alrtmsg=alrtmsg+"Password length must be at most 20 characters.\n";
			err++;
			form.password.value="";
			form.password2.value="";
		}
		for (i = 0; i < form.password.value.length; i++)
		{
			if (digits.indexOf(form.password.value.substr(i,1)) == -1 && 
				(alphabeth.indexOf(form.password.value.substr(i,1).toUpperCase()) == -1))
			{ 
				nerr++;
			}
		}
		if (nerr==1)
		{
			alrtmsg=alrtmsg+"1 invalid character in password.\n";
			err++;
			form.password.value="";
			form.password2.value="";
		}
		if (nerr>1 && nerr<5)
		{
			alrtmsg=alrtmsg+nerr+" invalid characters in password.\n";
			err++;
			form.password.value="";
			form.password2.value="";
		}
		if (nerr>=5)
		{
			alrtmsg=alrtmsg+nerr+" invalid characters in password.\n";
			err++;
			form.password.value="";
			form.password2.value="";
		}
	}
	if(form.password.value!=form.password2.value)
	{	alrtmsg=alrtmsg+"Incorrect password input.\n\tYou should re-enter the same password twice.\n";
		err++;
		form.password.value="";
		form.password2.value="";
	}

// first name
	if(form.first_name.value=="")
	{	alrtmsg=alrtmsg+"Enter your first name.\n";
		err++;
	}
	nerr = 0;
	for (i = 0; i < form.first_name.value.length; i++)
	{
		if (	   (alphabeth.indexOf(form.first_name.value.substr(i,1).toUpperCase()) == -1)
			&& (cz_sk_alphabeth.indexOf(form.first_name.value.substr(i,1).toUpperCase()) == -1)
			&& (zipchar.indexOf(form.first_name.value.substr(i,1).toUpperCase()) == -1)
		   )
		{ 
			nerr++;
		}
	}
	if (nerr>0)
	{
		alrtmsg=alrtmsg+"Invalid input for first name. ("+nerr+" char.)\n";
		err++;
	}

// last name
	if(form.last_name.value=="")
	{	alrtmsg=alrtmsg+"Enter your last name.\n";
		err++;
	}
	nerr = 0;
	for (i = 0; i < form.last_name.value.length; i++)
	{
		if (	   (alphabeth.indexOf(form.last_name.value.substr(i,1).toUpperCase()) == -1)
		    	&& (cz_sk_alphabeth.indexOf(form.last_name.value.substr(i,1).toUpperCase()) == -1)
		    	&& (zipchar.indexOf(form.last_name.value.substr(i,1).toUpperCase()) == -1)
		   )
		{ 
			nerr++;
		}
	}
	if (nerr>0)
	{
		alrtmsg=alrtmsg+"Invalid input for last name. ("+nerr+" char.)\n";
		err++;
	}

// e-mail
	nerr=0;
	nat=0;
	if(form.email.value=="")
	{	alrtmsg=alrtmsg+"Enter your e-mail address.\n";
		err++;
	}
	if(form.email.value!="")
	{
		for (i = 0; i < form.email.value.length; i++)
		{
			if ((digits.indexOf(form.email.value.substr(i,1)) == -1) && 
				(emailchar.indexOf(form.email.value.substr(i,1))) == -1 && 
				(alphabeth.indexOf(form.email.value.substr(i,1).toUpperCase()) == -1))
			{
				nerr++;
			}
			if (form.email.value.substr(i,1)=="@")
			{
				nat++;
			}
		}
		if ((nat!=1) || (form.email.value.length<6))
		{
			alrtmsg=alrtmsg+"Invalid e-mail address.\n";
			err++;
		}
		if (nerr>0)
		{
			alrtmsg=alrtmsg+nerr+" invalid character(s) in e-mail address.\n";
			err++;
		}
	}

// time_to_reach
	nerr=0;
	if(form.time_to_reach.value=="")
	{	alrtmsg=alrtmsg+"Please enter the best time to reach you.\n";
		err++;
	}

// phone
	if((form.day_phone_area.value=="")||(form.day_phone1.value=="")||(form.day_phone2.value==""))
	{	alrtmsg=alrtmsg+"Enter your primary telephone number.\n";
		err++;
	}

// address
	if(form.address.value=="")
	{	
		if (form.address2.value!="")
		{	form.address.value = form.address2.value;
			form.address2.value= "";
		}
	}
	if(form.address.value=="")
	{	alrtmsg=alrtmsg+"Address is a required field.\n";
		err++;
	}

// city
	if(form.city.value=="")
	{	alrtmsg=alrtmsg+"City is a required field.\n";
		err++;
	}

// zip
	nerr=0;
	if(form.zip.value=="")
	{	alrtmsg=alrtmsg+"Enter your ZIP.\n";
		err++;
	}
	if(form.zip.value!="")
	{
		for (i = 0; i < form.zip.value.length; i++)
		{
			if (digits.indexOf(form.zip.value.substr(i,1)) == -1)
			{
				nerr++;
			}
		}
		if (nerr>0)
		{
			alrtmsg=alrtmsg+nerr+"Invalid input for zip.\n";
			err++;
		}
	}

// country
	if(form.country.value=="")
	{	alrtmsg=alrtmsg+"Choose your country.\n";
		err++;
	}
// agree with terms
	if(0 || ((!(form.terms_check.value=="none")) && (!form.terms_check.checked)))
	{	alrtmsg=alrtmsg+"Please be sure to agree with 'Web site policy'.\n";
		err++;
	}
// final alert
	if(alrtmsg.length>maxlen)
	{	alrtmsg = alrtmsg.substr(0,maxlen-21)+"...\n\t...and more...";
	}
	if(err>0)
	{
		if (err==1)
		{
			alert("There is error in entered data\n\n"+alrtmsg);
			return false;
		}
		if (err>1)
		{
			alert("There are errors in entered data\n\n"+alrtmsg);
			return false;
		}
	}
	form.login.value = form.login.value.toLowerCase();
	return true;
}