var dbPath = '/wic-schiedam/website.nsf';
// functies voor het valideren van ingevoerde gegevens
function test_field(fieldname, errormessage)
{
	// true if field don't exist
	if( eval( 'document.forms[0].' + fieldname )  == null )
		return true;
	fieldvalue	= eval( 'document.forms[0].' + fieldname + '.value' );
	if ( fieldvalue.length == 0 ) {
		alert( errormessage );
		return set_focus(fieldname);
		return false 
	} 
	if ( trim_string(fieldvalue).length == 0 ) {
		alert( errormessage );
		return set_focus(fieldname);
		return false 
	}
	return true;
}
function test_date(  fieldname, errormessage  )
{
	// true if field don't exist
	if( eval( 'document.forms[0].' + fieldname )  == null )
		return true;
	extramessage	= "(dd-mm-jjjj)"
	dateString	= eval( 'document.forms[0].' + fieldname + '.value' );
	if (dateString != "") {
		arrayOfStrings 	= dateString.split('-');
	
		if ( arrayOfStrings.length != 3 )
		{
			alert( errormessage + extramessage);
			return false;
		}
		dd	= parseInt(arrayOfStrings[0], 10);
		mm	= parseInt(arrayOfStrings[1], 10);
		jjjj	= parseInt(arrayOfStrings[2], 10);
		if ( isNaN(dd) | isNaN(mm) | isNaN(jjjj) )
		{
			alert( errormessage + extramessage);
			return false;
		}
		if ( !is_valid_date( dd, mm, jjjj ) )
		{
			alert( errormessage + extramessage);
			return false;
		}
	}
	
	return true;
	
}
function test_number ( fieldname, errormessage )
{
	// true if field don't exist
	if( eval( 'document.forms[0].' + fieldname )  == null )
		return true;
	fieldvalue	= eval( 'document.forms[0].' + fieldname + '.value' );
	for (h=0; h<fieldvalue.length; h++) {
		if (( fieldvalue.charCodeAt(h)<48 || fieldvalue.charCodeAt(h)>57 ) && fieldvalue.charCodeAt(h) !==44 && fieldvalue.charCodeAt(h) !==46) {
			alert( errormessage );
			return set_focus(fieldname);
			return false
		}
	}
	return true;
}
function is_valid_date( dd, mm, jjjj )
{
	days_normal	= [ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ];
	days_schrikkel	= [ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ];
	s1 		= ((jjjj % 400) == 0);
	s2 		= ((jjjj % 100) == 0);
	s3 		= ((jjjj % 4)     == 0);
	is_schrikkeljaar 	= false;
	if ( s3 )
	{
		if ( s2 )
		{
			if ( s1 )
			{
				is_schrikkeljaar = true;
			}
			else
			{
				is_schrikkeljaar = false;
			}
		}
		else
		{
			is_schrikkeljaar = true;
		}
	}
	days = ( is_schrikkeljaar ? days_schrikkel : days_normal );
	if ( mm < 1 || mm >12 )
		return false;
	if ( jjjj <0 || jjjj > 9999 )
		return false;
	if ( dd < 1 || dd > days[mm-1] )
		return false;
	return true;
}
function test_radio( fieldname, errormessage )
{
	// true if field don't exist
	if( eval( 'document.forms[0].' + fieldname )  == null )
		return true;
	isOK		= false;
	len		= eval( 'document.forms[0].' + fieldname + '.length');

	for ( var i=0; i<len; i++ )
	{
		checked = eval( 'document.forms[0].' + fieldname + '[' + i + '].checked' );

		if ( checked )
			isOK = true;
	}

	if ( !isOK ) {
		alert( errormessage );
		return false }
	return isOK;
}
function test_option( fieldname, errormessage )
{
	// true if field don't exist
	if( eval( 'document.forms[0].' + fieldname )  == null )
		return true;
	isOK		= false;
	len		= eval( 'document.forms[0].' + fieldname + '.length');
	
	for ( var i=0; i<len; i++ )
	{
		selected = eval( 'document.forms[0].' + fieldname + '[' + i + '].selected' );
		if ( selected ) {
		
			wrde = eval( 'document.forms[0].' + fieldname + '.options[' + i + '].text' )
	
			if (wrde!="")
				isOK = true;
		}
	}
	if ( !isOK ) {
		alert( errormessage );
		return false }
	return isOK;
}
function trim_string( s )
{
	var l, r, len;
	len	= s.length;
	l 	= 0;
	r 	= len -1;
	while ( l <= r && s.charAt(l) == ' ' )
		l++;
	while ( r >= l && s.charAt(r) == ' ' )
		r--;
	return s.substring( l, r+1 );
}

function set_focus( fieldname )
{
	field = eval( 'document.forms[0].' + fieldname );

	if ( field==null )
		return;
	if ( field.type == 'hidden' )
		return;

	eval( 'document.forms[0].' + fieldname + '.focus();' );
}
// functie voor het refreshen van het document
function refreshDocument(div_naam)
{
	style = document.getElementById( div_naam ).style;
	style.visibility = 'hidden';
	style2 = document.getElementById( 'PartWacht' ).style;
	style2.visibility = 'visible';
	document.all.refresh.click();
//	style2.visibility = 'hidden';
}
// past de hoogte van een aantal div's aan wanneer een window geopend of geresized word.
function do_resize()
{
	var div;
	body_width	= window.innerWidth  != null ? window.innerWidth  : document.body.clientWidth;
	body_height	= window.innerHeight != null ? window.innerHeight : document.body.clientHeight;
	// scroller
//	div = document.getElementById('rechts');
//	if ( div != null )
//		div.style.height = body_height - 190;
	// menu1
//	div = document.getElementById('submenu-locatie');
//	if ( div != null )
//		div.style.left = (0.65 * body_width) - 315;
	// menu2
//	div = document.getElementById('submenu-woningen');
//	if ( div != null )
//		div.style.left = (0.65 * body_width) - 205;
}
// functie voor het exporteren van gegevens naar Excel
function openXLSDialog( agentURL )
{
	options = 'alwaysRaised=1,height=100,width=400,screenX=100,left=100,screenY=100,top=100,channelmode=0,dependent=1,directories=0,fullscreen=0,location=0,menubar=0,resizable=0,scrollbars=0,status=0,toolbar=0,hotkeys=0,border=0'; 
	dialog 		= window.open( dbPath + '/xlsdialog?readform&url=' + agentURL, '_blank', options );
}