//set so we know page is present
ValidationPresent = true;

function HomePageFormCheck() {
	var oFrm = eval('document.aspnetForm');
	var month;
	var day;
	var year;
	
	var langid = 1;
	if(document.aspnetForm.languageid)
		langid = document.aspnetForm.languageid.value;
		
	var messages = new Array();
	messages[1] = new Array('Please enter an airport From: location.', 'Please enter an airport To: location.');
	messages[2] = new Array('Saisissez un aéroport - Départ : lieu.', 'Saisissez un aéroport - Arrivée : lieu.');
	messages[3] = new Array('Bitte Flughafen angeben, VON: Ort.', 'Bitte Flughafen angeben, NACH: Ort.');
	messages[4] = new Array('Immettere un aeroporto nel campo Da:.', 'Immettere un aeroporto nel campo A:.');
	messages[5] = new Array('Especifique un lugar para el aeropuerto de partida.', 'Especifique un lugar para el aeropuerto de destino.');
	
	for(i = 0; i < oFrm.elements.length; i++) {
		if(oFrm.elements[i].name == "depart_segment-1") {
			if(isEmpty(oFrm.elements[i].value)) {
				fixElement(oFrm.elements[i], messages[langid][0]);
				return false;
			}
		}
		if(oFrm.elements[i].name == "arrive_segment-1") {
			if(isEmpty(oFrm.elements[i].value)) {
				fixElement(oFrm.elements[i], messages[langid][1]);
				return false;
			}
		}
		
		//get date to validate
		if(oFrm.elements[i].name == "month_segment-1") {
			month = oFrm.elements[i].value;
		}
		if(oFrm.elements[i].name == "day_segment-1") {
			day = oFrm.elements[i].value;
		}
		if(oFrm.elements[i].name == "year_segment-1") {
			year = oFrm.elements[i].value;
		}
	}
	
	return validateDate(month, day, year);
	
	return true;
}

function isEmpty(s) {
	return (s == null || s.length == 0);
}

function fixElement(e, m) {
	alert(m);
	e.focus();
	e.select();
}

function validateDate(month, day, year) {
	//validate the date
	if ((month==4 || month==6 || month==9 || month==11) && day==31) {
		alert("The month you selected doesn't have 31 days.");
		return false;
	}
	if (month == 2) { // check for february 29th
		var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
		if (day>29 || (day==29 && !isleap)) {
			alert("February " + year + " doesn't have " + day + " days.");
			return false;
		}	
   }
   
   return true;
}

function Is () 
{   // convert all characters to lowercase to simplify testing 
    var agt=navigator.userAgent.toLowerCase(); 

    // *** BROWSER VERSION *** 
    // Note: On IE5, these return 4, so use is.ie5up to detect IE5. 
    this.major = parseInt(navigator.appVersion); 
    this.minor = parseFloat(navigator.appVersion); 

    this.nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1) 
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1) 
                && (agt.indexOf('webtv')==-1)); 
    this.nav2 = (this.nav && (this.major == 2)); 
    this.nav3 = (this.nav && (this.major == 3)); 
    this.nav4 = (this.nav && (this.major == 4)); 
    this.nav4up = (this.nav && (this.major >= 4)); 
    this.navonly      = (this.nav && ((agt.indexOf(";nav") != -1) || 
                          (agt.indexOf("; nav") != -1)) ); 
    this.nav5 = (this.nav && (this.major == 5)); 
    this.nav5up = (this.nav && (this.major >= 5)); 

    this.ie   = (agt.indexOf("msie") != -1); 
    this.ie3  = (this.ie && (this.major < 4)); 
    this.ie4  = (this.ie && (this.major == 4) && (agt.indexOf("msie 5.0")==-1) ); 
    this.ie4up  = (this.ie  && (this.major >= 4)); 
    this.ie5  = (this.ie && (this.major == 4) && (agt.indexOf("msie 5.0")!=-1) ); 
    this.ie5up  = (this.ie  && !this.ie3 && !this.ie4); 

    // KNOWN BUG: On AOL4, returns false if IE3 is embedded browser 
    // or if this is the first browser window opened.  Thus the 
    // properties is.aol, is.aol3, and is.aol4 aren't 100% reliable. 
    this.aol   = (agt.indexOf("aol") != -1); 
    this.aol3  = (this.aol && this.ie3); 
    this.aol4  = (this.aol && this.ie4); 

    this.opera = (agt.indexOf("opera") != -1); 
    this.webtv = (agt.indexOf("webtv") != -1); 

    // *** JAVASCRIPT VERSION CHECK *** 
    if (this.nav2 || this.ie3) this.js = 1.0 
    else if (this.nav3 || this.opera) this.js = 1.1 
    else if ((this.nav4 && (this.minor <= 4.05)) || this.ie4) this.js = 1.2 
    else if ((this.nav4 && (this.minor > 4.05)) || this.ie5) this.js = 1.3 
    else if (this.nav5) this.js = 1.4 
    // NOTE: In the future, update this code when newer versions of JS 
    // are released. For now, we try to provide some upward compatibility 
    // so that future versions of Nav and IE will show they are at 
    // *least* JS 1.x capable. Always check for JS version compatibility 
    // with > or >=. 
    else if (this.nav && (this.major > 5)) this.js = 1.4 
    else if (this.ie && (this.major > 5)) this.js = 1.3 
    // HACK: no idea for other browsers; always check for JS version with > or >= 
    else this.js = 0.0; 

    // *** PLATFORM *** 
    this.win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) ); 
    // NOTE: On Opera 3.0, the userAgent string includes "Windows 95/NT4" on all 
    //        Win32, so you can't distinguish between Win95 and WinNT. 
    this.win95 = ((agt.indexOf("win95")!=-1) || (agt.indexOf("windows 95")!=-1)); 

    // is this a 16 bit compiled version? 
    this.win16 = ((agt.indexOf("win16")!=-1) || 
                  (agt.indexOf("16bit")!=-1) || (agt.indexOf("windows 3.1")!=-1) || 
                  (agt.indexOf("windows 16-bit")!=-1) ); 

    this.win31 = ((agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("win16")!=-1) || 
                  (agt.indexOf("windows 16-bit")!=-1)); 

    // NOTE: Reliable detection of Win98 may not be possible. It appears that: 
    //       - On Nav 4.x and before you'll get plain "Windows" in userAgent. 
    //       - On Mercury client, the 32-bit version will return "Win98", but 
    //         the 16-bit version running on Win98 will still return "Win95". 
    this.win98 = ((agt.indexOf("win98")!=-1) || (agt.indexOf("windows 98")!=-1)); 
    this.winnt = ((agt.indexOf("winnt")!=-1) || (agt.indexOf("windows nt")!=-1)); 
    this.win32 = ( this.win95 || this.winnt || this.win98 || 
                   ((this.major >= 4) && (navigator.platform == "Win32")) || 
                   (agt.indexOf("win32")!=-1) || (agt.indexOf("32bit")!=-1) ); 

    this.os2   = ((agt.indexOf("os/2")!=-1) || 
                  (navigator.appVersion.indexOf("OS/2")!=-1) || 
                  (agt.indexOf("ibm-webexplorer")!=-1)); 

    this.mac    = (agt.indexOf("mac")!=-1); 
    this.mac68k = (this.mac && ((agt.indexOf("68k")!=-1) || 
                               (agt.indexOf("68000")!=-1))); 
    this.macppc = (this.mac && ((agt.indexOf("ppc")!=-1) || 
                               (agt.indexOf("powerpc")!=-1))); 

    this.sun   = (agt.indexOf("sunos")!=-1); 
    this.sun4  = (agt.indexOf("sunos 4")!=-1); 
    this.sun5  = (agt.indexOf("sunos 5")!=-1); 
    this.suni86= (this.sun && (agt.indexOf("i86")!=-1)); 
    this.irix  = (agt.indexOf("irix") !=-1);    // SGI 
    this.irix5 = (agt.indexOf("irix 5") !=-1); 
    this.irix6 = ((agt.indexOf("irix 6") !=-1) || (agt.indexOf("irix6") !=-1)); 
    this.hpux  = (agt.indexOf("hp-ux")!=-1); 
    this.hpux9 = (this.hpux && (agt.indexOf("09.")!=-1)); 
    this.hpux10= (this.hpux && (agt.indexOf("10.")!=-1)); 
    this.aix   = (agt.indexOf("aix") !=-1);      // IBM 
    this.aix1  = (agt.indexOf("aix 1") !=-1); 
    this.aix2  = (agt.indexOf("aix 2") !=-1); 
    this.aix3  = (agt.indexOf("aix 3") !=-1); 
    this.aix4  = (agt.indexOf("aix 4") !=-1); 
    this.linux = (agt.indexOf("inux")!=-1); 
    this.sco   = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1); 
    this.unixware = (agt.indexOf("unix_system_v")!=-1); 
    this.mpras    = (agt.indexOf("ncr")!=-1); 
    this.reliant  = (agt.indexOf("reliantunix")!=-1); 
    this.dec   = ((agt.indexOf("dec")!=-1) || (agt.indexOf("osf1")!=-1) || 
         (agt.indexOf("dec_alpha")!=-1) || (agt.indexOf("alphaserver")!=-1) || 
         (agt.indexOf("ultrix")!=-1) || (agt.indexOf("alphastation")!=-1)); 
    this.sinix = (agt.indexOf("sinix")!=-1); 
    this.freebsd = (agt.indexOf("freebsd")!=-1); 
    this.bsd = (agt.indexOf("bsd")!=-1); 
    this.unix  = ((agt.indexOf("x11")!=-1) || this.sun || this.irix || this.hpux || 
                 this.sco ||this.unixware || this.mpras || this.reliant || 
                 this.dec || this.sinix || this.aix || this.linux || this.bsd || 
                 this.freebsd); 

    this.vms   = ((agt.indexOf("vax")!=-1) || (agt.indexOf("openvms")!=-1)); 
} 

var is = new Is();