function openWindow(path, width, height) {
	var scrWidth = screen.width;
	var scrHeight = screen.height;
	
	if(scrWidth > 800)
		var xLength = scrWidth * 0.8;
		
	if(scrHeight > 600)
		var yLength = scrHeight * 0.8;
	
	var xPos = 0;
	var yPos = 0;
	
	if(scrWidth >= 800)
		xPos = (scrWidth - width) / 2;
		
	if(scrHeight >= 600)
		yPos = ((scrHeight - height) / 2) - 10;

	var popupWindow = window.open(path, "popupWindow","scrollbars=yes,toolbar=no,location=no,resizable=no,width=" + width + ",height=" + height + ",top=" + yPos + ",left=" + xPos);
}

function changeField(field, change) {
	if(document.layers)
		f = document.layers["t1"].document.forms["RequestAirForm"];
	else
		f = document.forms["RequestAirForm"];

	var drpField = eval("f.elements['" + field + "']");
	var drpChange = eval("f.elements['" + change + "']");
	
	changeIndex(change, drpField.selectedIndex);		
}

function changeIndex(field, index) {
	if(document.layers)
		f = document.layers["t1"].document.forms["RequestAirForm"];
	else
		f = document.forms["RequestAirForm"];
	
	e = eval("f['" + field + "']");	
	if(e) {
		for(i = 0; i < e.length; i++) {
			if(i == index)
				e[i].selected = true;
			else
				e[i].selected = false;
		}
	}
}	

var origin = ""
var destination = ""
var currentDIV = ""
var hwnd = null

function checkBrowser(){

var agt=navigator.userAgent.toLowerCase();
var is_mac= (agt.indexOf("mac")!=-1);

		if 	(is_mac)
			window.close();
		else
			window.history.go(-1);
}

function resetForm(){
	
	if (currentDIV != ''){
		if (document.all){
			document.all[currentDIV].style.visibility="hidden";
		}
		else{
			document.layers[currentDIV].visibility="hide";
		}
	}
	origin = ""
	destination = ""
	currentDIV = ""
}

function setorigin(originID){
	origin = originID;	
}

function setdestination(destID){
	if (destID != origin){
		destination = destID;
		var agt=navigator.userAgent.toLowerCase();
		var is_mac= (agt.indexOf("mac")!=-1);
		if 	(is_mac)
			var r = window.open("../schedules/search_results.aspx?city=" + origin + "&city2=" + destination);	
		else
			location = "../schedules/search_results.aspx?city=" + origin + "&city2=" + destination;

	}			
}

//***************************************************
//
//  getMonth()
// 
//  returns the Month in the format specified
//
//***************************************************
function getMonth(month, format, rtnFormat) {
	// possible formats & rtnFormats are :
	// long		: eg January
	// abbrev	: eg JAN
	// number	: eg 1
	// jscript	: eg 0
	
	var monthArray = new Array();
	monthArray[0] = "January";
	monthArray[1] = "February";
	monthArray[2] = "March";
	monthArray[3] = "April";
	monthArray[4] = "May";
	monthArray[5] = "June";
	monthArray[6] = "July";
	monthArray[7] = "August";
	monthArray[8] = "September";
	monthArray[9] = "October";
	monthArray[10] = "November";
	monthArray[11] = "December";
	
	// get Month passed in
	switch(format) {
		case "long" :
			for(var i = 0; i < monthArray.length; i++) {
				if(monthArray[i] == month) {
					monthIndex = i;
					break;
				}
			}
			break;
		case "abbrev" :
			for(var i = 0; i < monthArray.length; i++) {
				if((monthArray[i] + "").substring(0,3).toUpperCase() == month) {
					monthIndex = i;
					break;
				}
			}
			break;
		case "number" : monthIndex = parseInt(month) - 1; break;
		case "jscript" : monthIndex = month; break;
			
	}
	
	switch(rtnFormat) {
		case "long" : return monthArray[monthIndex] + ""; break;
		case "abbrev" : return monthArray[monthIndex].substring(0,3).toUpperCase(); break;
		case "number" : return monthIndex + 1;
		case "jscript" : return monthIndex;
	}
}

function isDate(day, month, year) {

	month = getMonth(month, 'abbrev', 'jscript');
	var myDate = new Date();	

	if(year != null)
		myDate.setFullYear = year;
		
	myDate.setMonth(month);
	myDate.setDate(day);

	if(myDate.getDate() != day)
		return false;
	else
		return true;	
}

function show_calendarBP(date) {

		hwnd=window.open("calendar.aspx?date=" + date,"Calendar","scrollbars=no,toolbar=no,location=no,resizable=no,width=240,height=200,top=400,left=400");
}

function show_calendar(day, month, path, drpIndex, formName) {
	if(drpIndex == null)
		drpIndex = 1;
		
	if(formName == null)
		formName = "";
		
	hwnd=window.open(path + "calendar.aspx?d=" + day + "&m=" + month + "&drpIndex=" + drpIndex + "&formName=" + formName,"Calendar","scrollbars=no,toolbar=no,location=no,resizable=no,width=240,height=200,top=100,left=300");
}


function MM_preloadImages() {
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() {
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) {
  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);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() {
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_showHideLayers() {
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  currentDIV = args[0];
	for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
	origin = ""
	destination = ""
}

function BP_MM_showHideLayers() {
  var i,p,v,obj,args=BP_MM_showHideLayers.arguments;
  
  if (currentDIV == args[0]){
	args[2] = 'hide';
	BP_resetForm();
  }
  else{
	BP_MM_showHideLayers(currentDIV,'','hide');
	MM_showHideLayers('instr','','hide');
	currentDIV = args[0];
 }
	for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
	
}

function BP_resetForm(){
	
	if (currentDIV != ''){
		if (document.all){
			document.all[currentDIV].style.visibility="hidden";
		}
		else{
			document.layers[currentDIV].visibility="hide";
		}
	}
	MM_showHideLayers('instr','','show');
	currentDIV = ""
}