/**
* Validates a field of type Text to ensure that the user has not left it blank.
*
* Example call: msg += checkTextField("document.forms[0]","thatField","That Requried Field");
*
* @param	form  		The name of the form in which the field is located (ex: "document.forms[0]").
*		fieldName 	The name of the field you wish to validate.
*    		label		The text label on the form that describes the field to the user.
*
* @return	String tmpMsg.  The validation error message.
*/
function checkTextField (form, fieldName, label)
{
	var tmpMsg = "";
	hasStyle = eval(form + '.' + fieldName + '.style');
	val = eval(form + '.' + fieldName + '.value');

	// Check to see if a value was entered into the field
	if(val=="")
	{
		tmpMsg +=" - The field '" + label + "' is required.\n";
		if(hasStyle)
		{
			invalidBorder = "solid 1px red";
			eval(form + '.' + fieldName + '.style.border=invalidBorder');
		}
	}
	else
	{
		if(hasStyle)
		{
			validBorder = "solid 1px #808080";
			eval(form + '.' + fieldName + '.style.border=validBorder');
		}
	}
	return tmpMsg;
}

function checkDialogField(form, fieldName, label)
{
	var tmpMsg = "";
	fieldLength = eval(form + '.' + fieldName + '.options.length');
	valid = 0; //Assume invalid
	
	for (i=0; i< fieldLength; i++)
	{
		if(eval(form + "." + fieldName + ".options[" + i + "].selected"))
		{
			valid = 1;
		}		
	}
	
	if(valid==0)
	{
		tmpMsg +=" - The field '" + label + "' is required.\n";
	}
	return tmpMsg;
}

function checkRadioField (form, fieldName, label)
{
	var tmpMsg = "";
	fieldLength = eval(form + '.' + fieldName + '.length');
	valid = 0; //Assume invalid
	
	for (i=0; i< fieldLength; i++)
	{
		if(eval(form + "." + fieldName + "[" + i + "].checked"))
		{
			valid = 1;
		}
	}
	
	if(valid==0)
	{
		tmpMsg +=" - The field '" + label + "' is required.\n";
	}
	return tmpMsg;
	
}