/* ---------------------------- */
/* SHOW-HIDE Layer				*/
/* ---------------------------- */

//cookie setten
function cset(naam, waarde, verloopdt, pad) { 
  document.cookie = naam+"="+escape(waarde)+";expires="+verloopdt+";path="+pad; 
}


//intro verbergen
function hide_intro() {
	var verloopt = new Date(); 
	verloopt.setMonth(verloopt.getMonth() + 12); 
	cset("show_intro", "nee", verloopt, "/"); 
}


//Waarde in cookie opzoeken
function csearch(naam) { 
  var str = document.cookie; 
  var zstr = naam + "="; 
  var start = str.indexOf(zstr, 0); 
  if(start == -1) { 
    return false; 
  } else { 
    start += zstr.length; 
    var eind = str.indexOf(";", start); 
    if(eind == -1) eind = str.length; 
    return unescape(str.substring(start, eind)); 
  } 
} 


/*
if(csearch("show_intro")){
	document.getElementById('moveintro').style.display="none";
}else{
	document.getElementById('moveintro').style.display="block";
}
*/

//intro weergeven
function show_intro(){
	expires = new Date(1970,1,1);
	expires = expires.toGMTString();
	cset("show_intro", "", expires, "/"); 
}





function showlayer(layer){
	var myLayer=document.getElementById(layer).style.display;
	if(myLayer=="none"){
		document.getElementById(layer).style.display="block";
		show_intro();
	} else { 
		document.getElementById(layer).style.display="none";
		hide_intro();
	}
}