/*@cc_on @*/
/*@if (@_jscript_version <= 5.6)
    var ie6=true;
@else @*/
    var ie6=false;
/*@end @*/
/*@if (@_jscript_version >= 0.0)
    var ie=true;
@else @*/
    var ie=false;
/*@end @*/

function hideMenus(){
	if(ie){
		for (var i=1; i<=5; i++){
			var menuEl = document.getElementById("Menu"+i).getElementsByTagName("ul")[0];
			if (menuEl != null)
				menuEl.style.visibility="hidden";}
	}
}

function zeigen (was)
{
  if(ie){
    var menuEl = document.getElementById(was).getElementsByTagName("ul")[0]
    if (menuEl != null)
      menuEl.style.visibility="visible";
  }
  var bg = document.getElementById(was+"Back");
  bg.style.opacity = 0.75;
  bg.style.filter = 'alpha(opacity=75)';
}
function verstecken (was)
{
  if(ie){
    var menuEl = document.getElementById(was).getElementsByTagName("ul")[0]
    if (menuEl != null)
      menuEl.style.visibility="hidden";
  }
  var bg = document.getElementById(was+"Back");
  bg.style.opacity = 0.5;
  bg.style.filter = 'alpha(opacity=50)';
}
function changeFontsize(size) {
	var linkElements = document.getElementsByTagName('link');
	
	// Disabling and enabling stylesheets
	for (var i = 0; i < linkElements.length; i++) {
		if (linkElements[i].getAttribute('title')) {
			linkElements[i].disabled = true;
			if (linkElements[i].getAttribute('title') == size) {
				linkElements[i].disabled = false;
			}
		}
	}
	
	// Setting a cookie
	var expiration = new Date();
	var expirationOneYear = expiration.getTime() + (365 * 24 * 60 * 60 * 1000);
	expiration.setTime(expirationOneYear);
	document.cookie = 'fontsize='+ size +'; expires='+ expiration.toGMTString();
}