/*********************************************************
Genral purpose JavaScript functions for validation. Each 
function returns either 'True' or 'False'

\u00A9 Copyright 2002
Curt Coty
coty@gte.net
**********************************************************/

/*********************************************************
validateText()
This function checks to make sure the user has entered
data into a text-only field.
Arguments:
fld = field
errMsg = english name of field for display on error
**********************************************************/
function validateText(fld, errMsg)
{
	if(fld.value=="")
	{
		alert("Please enter a value for " + errMsg + ".");
		fld.focus();
		return false;	
	}//endif
	return true;
}//endfunction validatetext


/*********************************************************
validateNumber()
This function checks that the value of a field is a number
and, optionally within a certain range.
Arguments:
fld = field
errMsg = english name of field for display on error
min = Optional minimum allowed value
max = Optional maximum allowed value
**********************************************************/
function validateNumber(fld, errMsg, min, max)
{
	if(fld.value=="")
	{
		alert("Please enter a value for " + errMsg + ".");
		fld.focus();
		return false;	
	}//endif
	
	//check to see if it is a number	
	var n=parseFloat(fld.value);
	
	if(isNaN(n))
	{
		alert("Please enter a valid number for " + errMsg + ".");
		fld.focus();
		return false;	
	}//endif

	// check to see if the number is less than the minimum
	if ( min && n < min ) 	
	{
		alert("Please enter a number greater than " + min + " for " + errMsg + ".");
		fld.focus();
		return false;	
	}//endif

	// check to see if the number is more than the maximum
	if ( max && n > max )
	{
		alert("Please enter a number less than " + max + " for " + errMsg + ".");
		fld.focus();
		return false;	
	}//endif

	return true;
}//endfunction validateNumber

/*********************************************************
validateDate()
This function checks to make sure the user has entered
a date.
Arguments:
fld = field
errMsg = english name of field for display on error
**********************************************************/
function validateDate(fld, errMsg)
{
	var stDate = new Date(fld.value);
	if (stDate == "NaN")
	{
		alert("Please enter a valid date for " + errMsg + ".");
		fld.focus();
		return false;	
	}
	return true;
}//endfunction validateDate

/*********************************************************
validateSelect()
This function checks to make sure the user has selected
an option from a combobox or multi-select list box.
Arguments:
fld = field
errMsg = english name of field for display on error
**********************************************************/
function validateSelect(fld, errMsg)
{
	
	var idx=fld.selectedIndex;
	
	if(idx== -1)
	{
		alert("Please choose a value for " + errMsg + ".");
		fld.focus();
		return false;	
	}//endif
	return true;
}//endfunction validateSelect

/*********************************************************
validateCombobox()
This function checks to make sure the user has selected
an option from a combobox.  (The first option should 
always be "(please select)"
Arguments:
fld = field
errMsg = english name of field for display on error
**********************************************************/
function validateCombobox(fld, errMsg)
{
	
	var idx=fld.selectedIndex;
	
	if(idx== -1 || idx==0 )
	{
		alert("Please choose a value for " + errMsg + ".");
		fld.focus();
		return false;	
	}//endif
	return true;
}//endfunction validateCombobox

/*********************************************************
validateRadio()
This function checks to make sure the user has entered
an option for a radio button
Arguments:
fld = field
errMsg = english name of field for display on error
**********************************************************/
function validateRadio(fld, errMsg)
{
	for(i=0;i<fld.length;i++)
	{
		if(fld[i].checked==true)
		{
			return true;
		}//endif
	}//endfor

	alert("Please select a choice for " + errMsg + ".");
	fld[0].focus();
	return false;

}//endfunction validateRadio

/*********************************************************
validateCheckbox()
This function checks to make sure the user has selected
at least one option
Arguments:
fld = field
errMsg = english name of field for display on error
**********************************************************/
function validateCheckbox(fld, errMsg)
{

	for (index = 0; index < fld.length; index++)
	{
		if (fld[index].checked)
			return true;
	}
	alert("Please select at least one choice for " + errMsg + ".");
	fld[0].focus();
	return false;

}//endfunction validateCheckbox


/*********************************************************
validatePhone()
This function checks to make sure the user has entered
a correctly formatted phone number
Arguments:
fld = field
errMsg = english name of field for display on error
**********************************************************/
function validatePhone(fld, errMsg)
{
	var phone = fld.value;		// retrieve the value
	if(phone == "")
	{
		alert("Please enter a phone number for " + errMsg + ".");
		fld.focus();
		return false;	
	}//endif

	// Phone number entered with dashes or dots
	if (phone.length == 12)
	{
		while (phone.indexOf(".") > -1)
		{
			phone = phone.replace(".", "-");
		}
		fld.value = phone;
		return true;
	} // end if

	// Phone entered with no punctuation
	if (phone.length == 10)
	{
		phone = phone.substr(0, 3) + "-" + 
			phone.substr(3, 3) + "-" + phone.substr(6, 4);
		fld.value = phone;
		return true;
	} // end if

	// we can't deal with this format
	alert("Please enter your phone number in one of the following formats:" +
            "\n\n    999.999.9999 or " + 
            "\n    999-999-9999 or " + 
            "\n    9999999999.");

	fld.focus();
	return false;
} // end function validatePhone


/*********************************************************
checkAmount()
This function checks to make sure the user has entered a
valid currency value.
Arguments:
fld = field
**********************************************************/
function checkAmount (fld)
{
	var input = fld.value;
	num = input.toString().replace(/,|\$/, '')	
	var n = parseFloat(num);
	
	if (fld.value !="")
	{
		if(isNaN(n))
		{
			alert ("Amount must be a numeric value.");
			fld.focus();
			return input;
		} // end if
		return formatCurrency(n);
	}
	return input;
}

/*********************************************************
formatCurrency()
This is a helper function for checkAmount()
**********************************************************/
function formatCurrency(input) 
{
	num = input.toString().replace(/,|\$/, '')	
	if(isNaN(num))
	num = "0";
	
	sign = (num == (num = Math.abs(num)));
	num = Math.floor(num*100+0.50000000001);
	cents = num%100;
	num = Math.floor(num/100).toString();
	if(cents<10)
		cents = "0" + cents;
	for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
	num = num.substring(0,num.length-(4*i+3))+','+
	num.substring(num.length-(4*i+3));
	return (((sign)?'':'-') + num + '.' + cents);
}
/*****************************************************************
dialogAddressLookup (fieldName)
fieldName = return field on form

This function displays the address lookup "dialog box"
*****************************************************************/
function dialogAddressLookup(fieldName)
{
	var pathname;
	var url;
	pathname = (window.location.pathname);
	url=pathname.substring(0,(pathname.lastIndexOf('.nsf')+5))+'F_DLG_ADDRESS?OpenForm&rf=' + fieldName;
	window.open(url ,'Address', 'status=yes, menubar=yes,resizable=no,scrollbars=no,top=120,left=100,width=376,height=460');
}