function checkAll(field, value) {
	var cblength=document.forms[1].elements[field].length;
	if(typeof cblength=="undefined")
{
if(document.forms[1].elements[field].checked==false)
{
	document.forms[1].elements[field].checked = true
}
else
{
	document.forms[1].elements[field].checked = false
}
}
for (var i=0;i<document.forms[1].elements[field].length;i++) {
if(value == 1) {
document.forms[1].elements[field][i].checked = true
} else {
document.forms[1].elements[field][i].checked = false
}
}
} 


// © Dit script is gemaakt door mark knol
function Foto(img,txt){
 foto1= new Image();
 foto1.src=(img);
 CheckFoto(img,txt);
}
function CheckFoto(img,txt){
 if((foto1.width!=0)&&(foto1.height!=0)){
 viewFoto(img,txt);
}
else{
 uitvoering="CheckFoto('"+img+"','"+txt+"')";
 interval=setTimeout(uitvoering,20);
}
}
function viewFoto(img,txt){
 imgbreedte=foto1.width;
 imghoogte=foto1.height;
 if (!txt) {txt=img}
 vars="width="+imgbreedte+",height="+imghoogte+",left="+((screen.width-imgbreedte)/2)+",top="+((screen.height-imghoogte)/2);
 newwindow=window.open("","nieuwvenster",vars);
 newwindow.document.clear();
 newwindow.document.write("<html>\n<head>\n<title>"+txt+"</title>\n");
 newwindow.document.write("<meta http-equiv=\"imagetoolbar\" content=\"no\">\n");
 newwindow.document.write("</head>\n\n<body style=\"margin:0px; padding:0px;\" onBlur=\"window.close()\">\n"); 
 newwindow.document.write("<img src=\""+img+"\" border=\"0\" onclick=\"javascript:window.close()\">\n"); 
 newwindow.document.write("</body>\n</html>\n"); 
 if (newwindow.document.focus) {newwindow.document.focus();}
 newwindow.document.close(); 
}
// einde script 

