//aan te passen
vanaf_links = 100;
vanaf_boven = 100;
grootste_breedte  = 500+20;//afmetingen van het grootste beeld +20
grootste_hoogte = 500+20;  //afmetingen van het grootste beeld +20
//hieronder niets wijzigen
if (parseInt(navigator.appVersion.charAt(0))>=4){
var isNN=(navigator.appName=="Netscape")?1:0;
var isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;}
var optNN='scrollbars=no,width='+grootste_breedte+',height='+grootste_hoogte+',left='+vanaf_links+',top='+vanaf_boven;
var optIE='scrollbars=no,width=150,height=100,left='+vanaf_links+',top='+vanaf_boven;
function popBeeld(BeeldURL,BeeldTitel){
if (isNN){imgWin=window.open('about:blank','',optNN);}
if (isIE){imgWin=window.open('about:blank','',optIE);}
with (imgWin.document){
writeln('<html><head><title>Bezig met inladen ...</title><style>body{margin:0px;}</style>');writeln('<sc'+'ript>');
writeln('var isNN,isIE;');writeln('if (parseInt(navigator.appVersion.charAt(0))>=4){');
writeln('isNN=(navigator.appName=="Netscape")?1:0;');writeln('isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;}');
writeln('function aanpassen_aan_beeldgrootte(){');writeln('if (isIE){');writeln('window.resizeTo(100,100);');
writeln('width=100-(document.body.clientWidth-document.images[0].width);');
writeln('height=100-(document.body.clientHeight-document.images[0].height);');
writeln('window.resizeTo(width,height);}');writeln('if (isNN){');       
writeln('window.innerWidth=document.images["BeeldNaam"].width;');writeln('window.innerHeight=document.images["BeeldNaam"].height;}}');
writeln('function maak_titel(){document.title="'+BeeldTitel+'";}');writeln('</sc'+'ript>');
writeln('</head><body bgcolor=000000 scroll="no" onload="aanpassen_aan_beeldgrootte();maak_titel();self.focus()" onblur="self.close()">');
writeln('<img name="BeeldNaam" src='+BeeldURL+' style="display:block"></body></html>');
close();		
}}

function changePicture(id) {

	var images = $A($('productimage').getElementsByTagName('IMG')).each(function(node){Element.hide(node);});

	Element.show($(id));	

}

function toggleTeaser(id) {
	//if(is_int(id)) {
		//$('picture_'+id).toggle();
		//$('bottomtxt_'+id).toggle();	
	//}
	var images = $A($('middle').getElementsByTagName('IMG')).each(function(node){Element.hide(node);});

	Element.show($(id));	
}

function selectAll(formObj, isInverse) 
{
   for (var i=0;i < formObj.length;i++) 
   {
      fldObj = formObj.elements[i];
      if (fldObj.type == 'checkbox')
      { 
         if(isInverse)
            fldObj.checked = (fldObj.checked) ? false : true;
         else fldObj.checked = true; 
       }
   }
}

function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=yes,location=0,statusbar=0,menubar=0,resizable=0,width=600,height=500');");
}

function popup2(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=yes,location=0,statusbar=0,menubar=0,resizable=0,width=650,height=600');");
}

function validateEmpty(fld) {
	var error = "";
 
	if (fld.value.length == 0) {
		fld.style.background = 'Yellow'; 
		error = "U bent een veld vergeten\n"
	} else {
		fld.style.background = 'White';
	}
	return error;  
}					
function validateFormOnSubmit(theForm) {
	var reason = "";
	
	  reason += validateEmpty(theForm.name);
	  reason += validateEmpty(theForm.phone);
	  reason += validateEmpty(theForm.subject);
		  
	  if (reason != "") {
		alert("U bent een of meerdere velden vergeten in te vullen!");
		return false;
	  }
	
	  return true;
}
