// Some of this code is from the very wonderful Mr. Zeldman, maker of things and particularly zeldman.com
// Clears the standard text in input boxes and texfields

function alterNate(elm){
	if (!elm.base) elm.base = elm.value
	if (elm.value == elm.base) elm.value = "";
	else if (elm.value == "") elm.value = elm.base;
}



// Checks the forms for correct input

function checkform ( form )
{
	
         if (form.initialen.value == "Initialen") {
        alert( "Voer aub uw initialen in" );
        form.initialen.focus();
        return false ;
    }

	
	if (form.naam.value == "Naam") {
        alert( "Voer aub uw naam in" );
        form.naam.focus();
        return false ;
    }

	if (form.adres.value == "Adres") {
        alert( "Voer aub uw adres in" );
        form.adres.focus();
        return false ;
    }
	
		if (form.postcode.value == "Postcode") {
        alert( "Voer aub uw postcode in" );
        form.postcode.focus();
        return false ;
    }
	
			if (form.woonplaats.value == "Woonplaats") {
        alert( "Voer aub uw woonplaats in" );
        form.woonplaats.focus();
        return false ;
    }
	
			if (form.telefoon.value == "Telefoon") {
        alert( "Voer aub uw telefoonnummer in" );
        form.telefoon.focus();
        return false ;
    }
		
 
	return true ;
}


// Preload & mouse swapping images

function newImage(arg) {
     if (document.images) {
          rslt = new Image();
          rslt.src = arg;
          return rslt;
     }
}

function changeImages() {
     if (document.images && (preloadFlag == true)) {
          for (var i=0; i<changeImages.arguments.length; i+=2) {
               document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
          }
     }
}

var preloadFlag = false;
function preloadImages() {
     if (document.images) {
    
	strategie_on = newImage("/pics/m-strategie-on.gif");
	studio_on = newImage("/pics/m-studio-on.gif");
	media_on = newImage("/pics/m-media-on.gif");
	internet_on = newImage("/pics/m-internet-on.gif");
	
        preloadFlag = true;
     }
}