var available_width;
var closeTime;
var active;
allMenus=new Array('EventsDropDown','FeedbackDropDown');
var timeDef=600;

	if (navigator.appName.indexOf('Microsoft') != -1){
	   myBrowser="IE";
	}else if (navigator.appName.indexOf('Netscape') != -1){
      myBrowser="Nav";
	}
	if (navigator.platform.indexOf('Win32') != -1){
      sysOS="Win";
	}else if (navigator.platform.indexOf('Mac') != -1){
      sysOS="Mac";
	}

function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}

function MM_showHideLayers(layer) { //v3.0
  clearTimeout(closeTime);
  var i,v,obj;
	active=(layer+'DropDown');
	for (i=0; i<allMenus.length; i++) {
		v=(active==allMenus[i])?'visible':'hidden';
  		if ((obj=MM_findObj(allMenus[i]))!=null) { 
    		if (obj.style) { 
				obj=obj.style;  
			}
    		obj.visibility=v;
 		} 
  	}
        available_width=document.body.clientWidth;
  	if (layer != "hide") {
  	layerSetup(layer); 
  	}
}

function hideMenu(layer){
	clearTimeout(closeTime);
	layerHide(layer);
    closeTime = setTimeout("MM_showHideLayers('hide')", timeDef);
	return closeTime;
}

function Is() {
var agent = navigator.userAgent.toLowerCase();
this.major = parseInt(navigator.appVersion);
this.minor = parseFloat(navigator.appVersion);
this.ns = ((agent.indexOf('mozilla') != -1) &&
(agent.indexOf('spoofer') == -1) &&
(agent.indexOf('compatible') == -1) &&
(agent.indexOf('opera') == -1) &&
(agent.indexOf('webtv') == -1));
this.ns2 = (this.ns && (this.major == 2));
this.ns3 = (this.ns && (this.major == 3));
this.ns4 = (this.ns && (this.major == 4));
this.ns6 = (this.ns && (this.major >= 5));
this.ie = (agent.indexOf("msie") != -1);
this.ie3 = (this.ie && (this.major < 4));
this.ie4 = (this.ie && (this.major >= 4));
this.ie5 = (this.ie && (this.major == 4) &&
(agent.indexOf("msie 5.0") != -1));
this.ie6 = (this.ie && (this.major == 4) &&
(agent.indexOf("msie 6.0") != -1));
this.ieX = (this.ie && !this.ie3 && !this.ie4);
}

var is = new Is();

function layerObject(id,position,left,top,visibility) {
if (is.ie5||is.ie6||is.ns6){
this.obj = document.getElementById(id).style;
this.obj.position = position;
this.obj.left = left;
this.obj.top = top;
this.obj.visibility = visibility;
return this.obj;
} else if(is.ie4) {
this.obj = document.all[id].style;
this.obj.position = position;
this.obj.left = left;
this.obj.top = top;
this.obj.visibility = visibility;
return this.obj;
} else if(is.ns4) {
this.obj = document.layers[id];
this.obj.position = position;
this.obj.left = left;
this.obj.top = top;
this.obj.visibility = visibility;
return this.obj;
} 
}
function layerObject1(id,position,left,top,visibility) {
if (is.ie5||is.ie6||is.ns6){
this.obj = document.getElementById(id).style;
this.obj.position = position;
this.obj.left = left;
this.obj.top = top;
this.obj.visibility = visibility;
return this.obj;
} else if(is.ie4) {
this.obj = document.all[id].style;
this.obj.position = position;
this.obj.left = left;
this.obj.top = top;
this.obj.visibility = visibility;
return this.obj;
} else if(is.ns4) {
this.obj = document.layers[id];
this.obj.position = position;
this.obj.left = left;
this.obj.top = top;
this.obj.visibility = visibility;
return this.obj;
} 
}
function layerSetup(layer) {
if (layer == "Events") {
EventsDropDown = new layerObject('EventsDropDown ','absolute', available_width/2-360,'85','visible');
}
if (layer == "Feedback") {
FeedbackDropDown = new layerObject('FeedbackDropDown ','absolute', available_width/2-225,'85','visible');
}

}
function layerHide(layer) {
if (layer == "Events") {
EventsDropDown = new layerObject1('EventsDropDown ','absolute', available_width/2-360,'120','hidden');
}
if (layer == "Feedback") {
FeedbackDropDown = new layerObject1('FeedbackDropDown ','absolute', available_width/2-220,'120','hidden');
}
}