function placeFocus() {
if (document.forms.length > 0) {
var field = document.forms[0];
for (i = 0; i < field.length; i++) {
if ((field.elements[i].type == "text") || (field.elements[i].type == "textarea") || (field.elements[i].type.toString().charAt(0) == "s")) {
document.forms[0].elements[i].focus();
break;
         }
      }
   }
}

function ManageBrowserBack(){
	if (document.form1)
	if (document.form1.beenhere)
	if (document.form1.beenhere.value.indexOf('true')>=0) {
		document.form1.beenhere.value='doubletrue';
		document.form1.submit();
	}
}

function clearform(){
	f=document.forms['form1'];
	for(i=0;i< f.elements.length; i++) {
		e = f.elements[i];
		if (e.type) {
			if (e.type == 'text'           )	e.value = '';
			if (e.type.indexOf('select')>=0)	e.selectedIndex=0;
			if (e.type == 'radio'          )	e.checked=false;
		}
	}
}

var NN3 = false;
wissen = new Image();
wissen.src = "resources/wissen.gif";
wissenon = new Image();
wissenon.src = "resources/wissen_on.gif";
gadoor = new Image();
gadoor.src = "resources/gadoor.gif";
gadooron = new Image();
gadooron.src = "resources/gadoor_on.gif";
terug = new Image();
terug.src = "resources/terug.gif";
terugon = new Image();
terugon.src = "resources/terug_on.gif";
verzenden = new Image();
verzenden.src = "resources/verzenden.gif";
verzendenon = new Image();
verzendenon.src = "resources/verzenden_on.gif";
sluitditscherm = new Image();
sluitditscherm.src = "resources/sluitditscherm.gif";
sluitditschermon = new Image();
sluitditschermon.src = "resources/sluitditscherm_on.gif";
function on3(name)   {
        document[name].src = eval(name + "on.src");
}
function off3(name)  {
        document[name].src = eval(name + ".src");
}
NN3 = true;
function on(name)  {
        if (NN3) on3(name);
}
function off(name)  {
        if (NN3) off3(name);
}