function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


function illegalChars(field) {
	strng = field.value
	var illegalChars= /[\(\)\<\>\,\;\:\\\/\"'\[\]]/
	if (strng.match(illegalChars)) {
	error = "Er komen ongeldige tekens voor in het veld " + field.title + "\n";
	alert(error);
	field.focus();
	field.select();
	}
}

function isEmailAddr(field)
{
  var email = field.value
  var result = false
  if (email.length == 0)
  {result = true}
  var theStr = new String(email)
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  if(result ==false)
  {alert("Het opgegeven e-mailadres is ongeldig")
  field.focus();
  field.select();
  }
}


function validate(field) {
	var valid = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_"
	var ok = "yes";
	var temp;
	for	(var i=0; i<field.value.length; i++) {
	temp = "" + field.value.substring(i, i+1);
	if (valid.indexOf(temp) == "-1") ok = "no";
	}
	if (ok == "no") {
	alert("Voor de gebruikersnaam zijn alleen letters, cijfers en _ toegestaan!");
	field.focus();
	field.select();
   }
}


function IsNumeric(yourValue)
{
	myString = yourValue.value;
	myNewString = "";

	for (i=0; i < yourValue.value.length; i++)
    {
    if (myString.charAt(i) == "." )
        {
        myNewString += "";
        }
    else
		{
		if(myString.charAt(i) == ",")
			{
			i = yourValue.value.length
			}
			else
			{
			myNewString += myString.charAt(i);
			}
        }
    }

	if(myNewString.length != 0)
	{ 
		if(!isNaN(myNewString)) {
		return true;
		} else {
		alert('Het veld '+yourValue.title+' moet numeriek zijn')
		return false;
		}
	}
	else
	{
		alert('Het veld '+yourValue.title+' is verplicht')
		return false;
	}
 }
 
 
 function IsPositive(yourValue)
{
	myString = yourValue.value;
	myNewString = "";

	for (i=0; i < yourValue.value.length; i++)
    {
    if (myString.charAt(i) == "." )
        {
        myNewString += "";
        }
    else
		{
		if(myString.charAt(i) == ",")
			{
			i = yourValue.value.length
			}
			else
			{
			myNewString += myString.charAt(i);
			}
        }
    }

	if(myNewString.length != 0)
	{ 
		if(!isNaN(myNewString) && myNewString >= 0) {
		return true;
		} else {
		alert('Het veld '+yourValue.title+' moet positief zijn')
		return false;
		}
	}
	else
	{
		alert('Het veld '+yourValue.title+' is verplicht')
		return false;
	}
 }
 
 function IsPositiveAbs(yourValue)
{
	var continu;
	continu = true;
	myString = yourValue.value;
	myNewString = "";

	for (i=0; i < yourValue.value.length; i++)
    {
    if (myString.charAt(i) == "." )
        {
	    continu = false;
      
        }
    else
		{
		if(myString.charAt(i) == ",")
			{
			i = yourValue.value.length
			}
			else
			{
			myNewString += myString.charAt(i);
			}
        }
    }
	if(continu == false)
	{
	alert('Het bedrag mag geen punt bevatten, gebruik een komma.');
	return false;
	}

	if(myNewString.length != 0)
	{ 
		if(!isNaN(myNewString) && myNewString > 0) {
		return true;
		} else {
		alert('Het veld '+yourValue.title+' moet positief zijn en geen 0')
		return false;
		}
	}
	else
	{
		alert('Het veld '+yourValue.title+' is verplicht')
		return false;
	}
 }

			<!-- hide
			function mmLoadMenus() {
  if (window.mm_menu_0401230746_0) return;
  window.mm_menu_0401230746_0 = new Menu("root",60,18,"Tahoma, Arial, Helvetica, sans-serif",12,"#ffffff","#000000","#5ea8b6","#ffffff","left","middle",3,0,1000,-5,7,true,true,true,0,true,true);
  mm_menu_0401230746_0.addMenuItem("Eenmalig","location='default.asp?fuseaction=dspUitgavenVariabel'");
	mm_menu_0401230746_0.addMenuItem("Herhalend","location='default.asp?fuseaction=dspUitgavenVast'");
   mm_menu_0401230746_0.hideOnMouseOut=true;
   mm_menu_0401230746_0.menuBorder=1;
   mm_menu_0401230746_0.menuLiteBgColor='#4e9aa9';
   mm_menu_0401230746_0.menuBorderBgColor='#5ea8b6';
   mm_menu_0401230746_0.bgColor='#5ea8b6';
  window.mm_menu_0401231534_1 = new Menu("root",60,18,"Tahoma, Arial, Helvetica, sans-serif",12,"#ffffff","#000000","#5ea8b6","#ffffff","left","middle",3,0,1000,-5,7,true,true,true,0,true,true);
  mm_menu_0401231534_1.addMenuItem("Eenmalig","location='default.asp?fuseaction=dspInkomstenVariabel'");
	mm_menu_0401231534_1.addMenuItem("Herhalend","location='default.asp?fuseaction=dspInkomstenVast'");
   mm_menu_0401231534_1.hideOnMouseOut=true;
   mm_menu_0401231534_1.menuBorder=1;
   mm_menu_0401231534_1.menuLiteBgColor='#4e9aa9';
   mm_menu_0401231534_1.menuBorderBgColor='#5ea8b6';
   mm_menu_0401231534_1.bgColor='#5ea8b6';
  window.mm_menu_0401212309_2 = new Menu("root",69,18,"Tahoma, Arial, Helvetica, sans-serif",12,"#ffffff","#000000","#5ea8b6","#ffffff","left","middle",3,0,1000,-5,7,true,true,true,0,true,true);
  mm_menu_0401212309_2.addMenuItem("Budgetten","location='default.asp?fuseaction=dspBudgetten'");
  mm_menu_0401212309_2.addMenuItem("Overzicht","location='default.asp?fuseaction=dspOverzicht'");
  mm_menu_0401212309_2.addMenuItem("Grafieken","location='default.asp?fuseaction=dspGrafieken'");
   mm_menu_0401212309_2.hideOnMouseOut=true;
   mm_menu_0401212309_2.menuBorder=1;
   mm_menu_0401212309_2.menuLiteBgColor='#4e9aa9';
   mm_menu_0401212309_2.menuBorderBgColor='#5ea8b6';
   mm_menu_0401212309_2.bgColor='#5ea8b6';
  window.mm_menu_0401213539_3 = new Menu("root",120,18,"Tahoma, Arial, Helvetica, sans-serif",12,"#ffffff","#000000","#5ea8b6","#ffffff","left","middle",3,0,1000,-5,7,true,true,true,0,true,true);
  mm_menu_0401213539_3.addMenuItem("Huidig&nbsp;saldo","location='default.asp?fuseaction=dspSaldo'");
  mm_menu_0401213539_3.addMenuItem("Rubrieken","location='default.asp?fuseaction=dspRubrieken'");
  mm_menu_0401213539_3.addMenuItem("Gebruikersgegevens","location='default.asp?fuseaction=dspGebruiker'");
   mm_menu_0401213539_3.hideOnMouseOut=true;
   mm_menu_0401213539_3.menuBorder=1;
   mm_menu_0401213539_3.menuLiteBgColor='#4e9aa9';
   mm_menu_0401213539_3.menuBorderBgColor='#5ea8b6';
   mm_menu_0401213539_3.bgColor='#5ea8b6';

  mm_menu_0401213539_3.writeMenus();
  
} // mmLoadMenus()

// stop hiding -->