var high = new Array(); //highlighted imgs
var norm = new Array(); //normal imgs

//standard image preloader
// the array "navitems" has to be defined directly
// in the page before this script is called
//for (i=0;i<navitems.length;i++) {
//  curritem=navitems[i];
//  high[curritem] = new Image(); high[curritem].src="/img/nav/"+curritem+"_f2.gif";
//  norm[curritem] = new Image(); norm[curritem].src="/img/nav/"+curritem+".gif";
//}

//mouse(over|out)
function moo(img_name,moo_action) {
  switch(moo_action) {
    case 1: document.images[img_name].src = high[img_name].src;break;
    case 2: document.images[img_name].src = norm[img_name].src;break;
  }
}

function konsole(konsurl,konswidth,konsheight) {
  kons = window.open(konsurl, "zoom", "width="+konswidth+",height="+konsheight+",location=no,menubar=no,scrollbars=no,status=no,toolbar=no,resizable=no");
  if(kons && kons.focus)kons.focus();
}

function cme_login() {
  window.open("/cme/login.php", "login", "width=450,height=300,resizable=yes");
}

function form_error(errortext,formelement) {
  alert("Bitte vollstaendig ausfuellen: " + errortext);
  if (formelement && formelement.focus) formelement.focus();
  return false;  
}

function check_kontaktform() {
  fe = document.kontaktform.elements; //fe = form elements
  var mailregex = /^[0-9a-zA-Z][0-9a-zA-Z\._-]*@([0-9a-zA-Z-_]+\.)+([a-z]{2,4})$/;

  if (fe.betreff.value=="")      return form_error("Betreff",fe.betreff);
  if (fe.fullname.value=="")	 return form_error("Name",fe.fullname);
  if (!mailregex.test(document.kontaktform.email.value)) 	return form_error("E-Mail",fe.email);
  if (fe.nachricht.value=="")	 return form_error("Nachricht",fe.nachricht);
  return true;
}

function check_gbform() {
  fe = document.gb_form.elements; //fe = form elements
  if (fe.gb_name.value=="")      return form_error("Name",fe.gb_name);
  if (fe.gb_text.value=="")	 return form_error("Nachricht",fe.gb_text);
  return true;
}

function check_forumform() {
  var missing_fields="";
  if (document.forms[0].f_title.value=="")	missing_fields+="\n- Title of your comment";
  if (document.forms[0].f_text.value=="") 	missing_fields+="\n- Your comment";
  if (document.forms[0].f_name.value=="") 	missing_fields+="\n- Your Name";
  if (missing_fields!="") {
    alert("Please fill in the following fields: "+missing_fields);
    return false;
  }
  else return true;
}


/* button stuff */
document.onmouseover = butOver;
document.onmouseout  = butNorm;
document.onmousedown = butPres;
document.onmouseup   = butOver;

function butOver() {
  evse = event.srcElement;
  if (evse.className.substr(0,3)=="but") evse.className = "butover";
}
function butNorm() {
  evse = event.srcElement;
  if (evse.className.substr(0,3)=="but") evse.className = "button";
}
function butPres() {
  evse = event.srcElement;
  if (evse.className.substr(0,3)=="but") evse.className = "butpres";
}