/* 
* Jscript defs
* $Id: nhls_common.js,v 1.27.2.64.2.6 2007-09-07 18:57:37 akinder Exp $
*/

/*
* Globals
*/
var currentForm = '';
var formHandler = '';
var checkOptions = new Array();

var blankRad1 = true;
var blankRad2 = true;

var imgCaseAdd = 'resources/images/case_add.gif';
var imgCaseDel = 'resources/images/case_delete.gif';

var caseType = 'Add';

//
// Use cookies?
//
var var_can_use_cookies = true;

// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

/*
* Deselect all rows in a multi select
*/
function deselect_multi_select( propertyName )
{
	//
	// Short
	//
	var handle = document.getElementById( propertyName );
	
	for( var x=0; x<handle.options.length; x++ )
	{
		handle.options[x].selected = null;
	}
}

/*
* Fix that annoying Form - No Enter bug
*/
function exec_key_down()
{
	//
	// If there is a form handler on the page, bind to it
	//
	if( formHandler != "" )
	{
		//
		// Bind to keydown # 13
		//
		formHandler.onkeydown = check_key_down;
	}
}
function check_key_down(e)
{
	if( !e )
	{
		if( window.event.keyCode == 13 )
		{
			formHandler.submit();
		}
	}
	else
	{
		//
		// Is it 13?
		//
		if( e.keyCode == 13 )
		{
			formHandler.submit();
		}
	}
}

/*
* Test cookies
*/
function NHLS_cookie_test()
{
	//
	// Try to set a cookie
	//
	my_setcookie("nhls-test", "test");
	
	var wasSet = my_getcookie("nhls-test");
	
	if( wasSet == null )
	{
		var_can_use_cookies = false;
	}
}

/*
* Center a div
*/
function center_div( divId )
{
	var div = document.getElementById( divId );
	
	//
	// Reset the margin
	//
	div.style.marginLeft = "-" + parseInt( ( div.offsetWidth + 350 ) / 1 ) + "px";
	div.style.marginTop = "-" + parseInt( div.offsetHeight / 3 ) + "px";
}

/*
* Disable a text element
*/
function disableTextElement( elemID )
{
	var handler = document.getElementById( elemID );
	
	//
	// Colorize it
	//
	handler.style.background = "#d4d0c8";
	handler.style.color = "#808080";
	
	handler.disabled = true;
}

/*
* Cookie helper funcs
*/
function my_setcookie( name, value, my_expire )
{
	var today = new Date();
	var expire = new Date();
	
	if( my_expire == null || my_expire == 0 )
	{
		expire.setTime( today.getTime() + 3600000*24*my_expire );
	}
	
	document.cookie = name+"="+escape(value)+";expires="+expire.toGMTString();
} 

function my_getcookie( name )
{
	c_name = name + '=';
	c_pos = document.cookie.indexOf( c_name );

	if( c_pos != -1 )
	{
		c_start = c_pos + c_name.length;
		c_end = document.cookie.indexOf( ";",c_start );
	
		if( c_end == -1 )
		{
			c_end=document.cookie.length;
		}
	
		return unescape( document.cookie.substring(c_start,c_end) );
	}
	
	return null;
}

/*
* Check date format
*/
function isValidDate( thisDate )
{
	var format = 'M/d/y';
	var valid = isDate( thisDate, format);

	return valid;
}

/*
* Handle calendar select 
*/
function handle_date_select( type, args, obj )
{
	var tmp = args[0];
	var date_time = tmp[0];
	
	var year = date_time[0], month = date_time[1], day = date_time[2];
	
	//
	// Pull the text ID
	//
	document.getElementById('calInput').value = month + "/" + day + "/" + year;
	
	//
	// Toggle
	//
	toggle_div( "cal1Container" );
}

/*
* Handle calendar select for cal2
*/
function handle_date_select2( type, args, obj )
{
	var tmp = args[0];
	var date_time = tmp[0];
	
	var year = date_time[0], month = date_time[1], day = date_time[2];
	
	//
	// Pull the text ID
	//
	document.getElementById('calInput2').value = month + "/" + day + "/" + year;
	
	//
	// Toggle
	//
	toggle_div( "cal2Container" );
}

//
// Toggle two calendars
//
function toggle_two_calendars( id )
{
	var calendar1state = document.getElementById( "cal1Container" );
	var calendar2state = document.getElementById( "cal2Container" );
	
	if( id == "cal1Container" )
	{
		if( calendar1state.style.display == 'none' )
		{
			if( calendar2state.style.display == 'block' )
			{
				calendar2state.style.display = 'none';
			}
			calendar1state.style.display = 'block';
		}
		else
		{
			calendar1state.style.display = 'none';
		}
	}
	
	if( id == "cal2Container" )
	{
		if( calendar2state.style.display == 'none' )
		{
			if( calendar1state.style.display == 'block' )
			{
				calendar1state.style.display = 'none';
			}
			calendar2state.style.display = 'block';
		}
		else
		{
			calendar2state.style.display = 'none';
		}
	}
}

/*
* Goto button for paging
*/
function do_goto_paging(paging_max_page)
{
	//
	// Get the page
	//
	var paging_dr_howser = parseInt(document.getElementById( 'gtp' ).value);	
	
	if( isNaN( paging_dr_howser ) || paging_dr_howser <= 0 ) 
	{	    
		paging_dr_howser = 1;		
	}
	
	//
	// Absurd number?
	//
	if( paging_dr_howser > paging_max_page )
	{
		alert( "Requested page cannot be larger than " + paging_max_page );
	}
	else
	{
		//
		// Send
		//		
		doPaging(paging_dr_howser);
	}
}

/*
* Generic call for submit
*/
function do_action( command )
{
	formHandler.cmd.value = command;
	formHandler.submit();
}

/*
* Generic call for canceling
*/
function cancel_action( location, sublocation )
{
	//
	// Set and go
	//
	formHandler.action = location;
	formHandler.cmd.value = sublocation;
	formHandler.submit();
}

/*
* Workaround for textonly
*/
function is_text_only()
{
	//
	// Grab all the IMG elements
	//
	var images = document.getElementsByTagName("IMG");
	
	for( var x = 0; x < images.length; x++ )
	{
		//
		// Hide them
		//
		images[x].style.display = 'none';
		
		//
		// Just to make sure
		//
		images[x].style.height = '1px';
		images[x].style.width = '1px';
	}
}

/*
* Generic funcs
*/
function setFormHandler()
{
	var tmp = document.getElementsByName( currentFormID );
	formHandler = tmp.item(0);
	
	if( currentFormID == 'radiusSearchForm' )
	{
		//
		// Setup the on focus handler
		//
		formHandler.radius1.onfocus = onfocusRad1;
		formHandler.radius2.onfocus = onfocusRad2;
	}
}

/*
* Toggle a submit button
*/
function toggle_submit_button( id, text )
{
	document.getElementById( id ).value = text;
	
	if( document.getElementById( id ).disabled == true )
	{
		document.getElementById( id ).disabled = false;
	}
	else
	{
		document.getElementById( id ).disabled = true;
	}
}

function toggle_div( id, override )
{
	if( override == '' )
	{
		override = false;
	}

	var FIstate = document.getElementById( id );
	
	if( !override )
	{
		if( FIstate.style.display == 'none' )
		{
			FIstate.style.display = 'block';
		}
		else
		{
			FIstate.style.display = 'none';
		}
	}
	else
	{
		//
		// Always on
		//
		FIstate.style.display = 'block';
	}
	
	//
	// TMP
	if( window.ie6 )
	{
		var selects = $$('select');
		selects.setStyle("display", "");
	}
}
	
function pop_window( url, width )
{
	if( width == null )
	{
		width = 770;
	}

	window.open( url, 'PrintWin', "resizable=yes, height=600, width="+width+", toolbars=yes, menubar=yes, scrollbars=yes" );
}

function validateZIP(field) 
{
	//
	// Length
	//
	if( field.length < 5 || field.length > 5 )
	{
		alert( 'Please enter your five digit zipcode.' );
		return false;
	}
	
	//
	// Test the field
	//
	if( isNaN( Number(field) ) )
	{
		alert( 'Please enter your five digit zipcode.' );
		return false;
	}
	else
	{
		return true;
	}
}

//
// Utility functions
//
function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone){
	s=stripCharsInBag(strPhone,validWorldPhoneChars);
	return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function leftTrim(sString) {
	while (sString.substring(0,1) == ' ')
	{
		sString = sString.substring(1, sString.length);
	}
	return sString;
}

function trimPageBreak(sString)
{
	while (sString.substring(0,1) == '\n')
	{
		sString = sString.substring(1, sString.length);
	}
	while (sString.substring(sString.length-1, sString.length) == '\n')
	{
		sString = sString.substring(0,sString.length-1);
	}
	
	return sString;
}

function rightTrim(sString) {
	while (sString.substring(sString.length-1, sString.length) == ' ')
	{
		sString = sString.substring(0,sString.length-1);
	}
	return sString;
}

function trimBothEnd(sString){
	return leftTrim(rightTrim(sString));
}


function trimAll(sString) {
	while (sString.substring(0,1) == ' '){
		sString = sString.substring(1, sString.length);
	}
	while (sString.substring(sString.length-1, sString.length) == ' '){
		sString = sString.substring(0,sString.length-1);
	}
	return sString;
}

function isEmpty(sString){

	var s = trimBothEnd(sString);
	
	if (s.length == 0){
		return true;
	}
	return false;
}

function isFloat(s){
	
	if(isNaN(parseFloat(s))){
			return false;
	}
	return true;
}

function isPositiveFloat(s){
	
	if(isNaN(parseFloat(s))){
		return false;
	}
	if(parseFloat(s)<=0){
		return false;
	}
	return true;
}

function goOutside(url)
{
   if( url != null )
   {
	if(confirm("You have requested a document that is external to HUD's World Wide Website. HUD cannot attest to the accuracy of information provided by linked sites. Linking to a website does not constitute an endorsement by HUD, or any of its employees, of the sponsors of the site or the products presented on the site.")){
		window.open(url);	
	}
   }
}