function hideById(id)
{
	document.getElementById(id).style.display = 'none';
}

function showById(id)
{
	document.getElementById(id).style.display = 'block';
}

function showRowById(id)
{
	document.getElementById(id).style.display = 'table-row';
}

function showzip(val){

   if(val=='US' || val=='UK'|| val=='FR'){
     showRowById('zipinput');
   }else{
     hideById('zipinput');
   }	   
}




function isBrowserSupp() {
    // Get the version of the browser
    version =  parseFloat( navigator.appVersion );

    if ( ( version >= 2.0 ) && ( version < 2.1 ) && ( navigator.appName.indexOf( "Netscape" ) != -1 ) ) {
        return false;
    } else {
        return true;
    }

    return true;
}

function isLeapYear( yrStr ) {
    var leapYear = false;
    var year = parseInt( yrStr, 10 );
    // every fourth year is a leap year
    if ( year % 4 == 0 ) {
        leapYear = true;
        // unless it's a multiple of 100
        if( year % 100 == 0 ) {
            leapYear = false;
            // unless it's a multiple of 400
            if( year % 400 == 0 ) {
                leapYear=true;
            }
        }
    }
    return leapYear;
}

function getDaysInMonth( mthIdx, YrStr ) {
    // all the rest have 31
    var maxDays = 31
    // expect Feb. (of course)
    if( mthIdx == 1 ) {
        if( isLeapYear( YrStr ) ) {
            maxDays=29;
        } else {
            maxDays=28;
        }
    }

    // thirty days hath...
    if( mthIdx == 3 || mthIdx == 5 || mthIdx == 8 || mthIdx == 10 ) {
        maxDays=30;
    }
    return maxDays;
}


//the function which does some magic to the date fields
// return non-zero if it is the last day of the month
function adjustDate( mthIdx, Dt ) {
    var value = 0;

    var today = new Date()
    var theYear = parseInt( today.getYear(), 10 )

    if( mthIdx < today.getMonth() ) {
        theYear = ( parseInt( today.getYear(), 10 ) + 1 )
    }
    if( theYear < 100 ) {
        theYear = "19" + theYear
    } else {
        if( ( theYear - 100 ) < 10 ) {
            theYear = "0" + ( theYear - 100 )
        } else {
            theYear = ( theYear - 100 ) + ""
        }
        theYear = "20" + theYear
    }


    var numDays = getDaysInMonth( mthIdx, theYear );

    if( mthIdx == 1 ) {
        if( Dt.options.selectedIndex + 1 < numDays ) {
            return 0;
        } else {
            Dt.options.selectedIndex=numDays - 1;
            //check for leap year
            if( numDays == 29 ) {
                return 99;
            } else {
                return 1;
            }
        }
    }

    if( Dt.options.selectedIndex + 1 < numDays ) {
        value = 0;
    } else {
        if ( Dt.options.selectedIndex + 1 > numDays ) {
            Dt.options.selectedIndex--;
            value = 3;
        } else {
            //index is 31 or 30
            value = 2;
        }
    }
    return value;
}

//changes departure month when arrival month is changed
function amadChange( inM, inD, outM, outD ) {
    if ( !isBrowserSupp() ) {
        return;
    }

    var res = adjustDate( inM.options.selectedIndex, inD );
    if( res != 0 ) {
           outD.options.selectedIndex = 0;
           if ( outM.options.selectedIndex == 11 ) {
                outM.options.selectedIndex = 0
           } else {
                outM.options.selectedIndex=inM.options.selectedIndex + 1;
                outD.options.selectedIndex = 1;
           }
    } else {
        outM.options.selectedIndex = inM.options.selectedIndex;
        if (outD.options.selectedIndex <= inD.options.selectedIndex) {
            outD.options.selectedIndex = inD.options.selectedIndex + 2;
        }
    }
    return;
}


function dmddChange( outM, outD ) {
    if ( !isBrowserSupp() ) {
        return;
    }

    adjustDate( outM.options.selectedIndex, outD );
    return;
}



function OpenWindow(file, name, width, height) {
    OpenWindow(file, name, width, height, false);
}

function OpenWindow(file, name, width, height, showLeftTopScrollbar) {
    var attr = "";
    if(showLeftTopScrollbar) {
        attr += "top=50,left=50,scrollbars=1,";
    }
    attr += "width=" + width + ",height=" + height + ",resizeable=1";
    window.open(file, name, attr);
}

function loadDefaultDates() {
    var airArrival = new Date();
    var airDeparture = new Date();

    var airAdvanceArrival = 14;
    var airAdvanceDeparture = 15;

    airArrival.setDate( airArrival.getDate() + airAdvanceArrival );
    airDeparture.setDate( airDeparture.getDate() + airAdvanceDeparture );

    document.forms['airForm'].departureMonth.value = '4';
    document.forms['airForm'].returnMonth.value ='4';
    document.forms['airForm'].departureDay.value = 21;
    document.forms['airForm'].returnDay.value = 26;


}

function validateDepWindow(formName) {
    if (document.forms[formName].tempDepTime[document.forms[formName].tempDepTime.selectedIndex].value==('M')) {
        window.document.forms[formName].tripWindow.value='5';
        window.document.forms[formName].departureTime.value='7AM';
    } else if (document.forms[formName].tempDepTime[document.forms[formName].tempDepTime.selectedIndex].value==('A')) {
        window.document.forms[formName].tripWindow.value='5';
        window.document.forms[formName].departureTime.value='3PM';
    } else if (document.forms[formName].tempDepTime[document.forms[formName].tempDepTime.selectedIndex].value==('E')) {
        window.document.forms[formName].tripWindow.value='5';
        window.document.forms[formName].departureTime.value='8PM';
    } else if(document.forms[formName].tempDepTime[document.forms[formName].tempDepTime.selectedIndex].value==('ANT')) {
        window.document.forms[formName].tripWindow.value='9';
        window.document.forms[formName].departureTime.value='12PM';
    } else {
        window.document.forms[formName].tripWindow.value='5';
        window.document.forms[formName].departureTime.value=document.forms[formName].tempDepTime.value;
    }
}

function validateRetWindow(formName) {
    if (document.forms[formName].tempRetTime[document.forms[formName].tempRetTime.selectedIndex].value==('M')) {
        window.document.forms[formName].returnTime.value='7AM';
    } else if (document.forms[formName].tempRetTime[document.forms[formName].tempRetTime.selectedIndex].value==('A')) {
        window.document.forms[formName].returnTime.value='3PM';
    } else if (document.forms[formName].tempRetTime[document.forms[formName].tempRetTime.selectedIndex].value==('E')) {
        window.document.forms[formName].returnTime.value='8PM';
    } else if(document.forms[formName].tempRetTime[document.forms[formName].tempRetTime.selectedIndex].value==('ANT')) {
        window.document.forms[formName].returnTime.value='12PM';
    } else {
        window.document.forms[formName].returnTime.value=window.document.forms[formName].tempRetTime.value;
    }
   }


function update(themonth,theday){
document.forms[fName].elements[formType+'Day'].options[theday - 1].selected = true;
document.forms[fName].elements[formType+'Month'].options[themonth].selected = true;

testWindow.close();
}


function loadCalendar(viewMonth) {


testWindow.document.close();
testWindow.document.open();


var day_of_week = new Array("Sun","Mon","Tue","Wed","Thu","Fri","Sat");
var month_of_year = new Array("January","February","March","April","May","June","July","August","September","October","November","December");

var dateObj = new Date();
var year = dateObj.getYear();	 // Returns year
var month = dateObj.getMonth();  // Returns month (0-11)
var today = dateObj.getDate();   // Returns day (1-31)
var weekday = dateObj.getDay();  // Returns day (1-31)

var DAYS_OF_WEEK = 7;   // "constant" for number of days in a week
var DAYS_OF_MONTH = 31; // "constant" for number of days in a month
var cal;                // Used for printing

if (viewMonth < month) {
	year = year + 1;
}

if(year < 1900){
	year += 1900; //done to solve the problem of netscape and mozilla returning year in form 10X for years > 2000
}

month = viewMonth;
dateObj.setDate(1);      // Start the calendar day at '1'
dateObj.setMonth(month); // Start the calendar month at now
dateObj.setYear((year));

// VARIABLES FOR FORMATTING
var TR_start = '<TR>';
var TR_end = '</TR>';
var highlight_start = '<TD WIDTH="30"><TABLE CELLSPACING=0 BORDER=1 BGCOLOR=DEDEFF BORDERCOLOR=CCCCCC><TR><TD WIDTH=20><B><CENTER>';
var highlight_end   = '</CENTER></TD></TR></TABLE></B>';
var TD_start = '<TD WIDTH="30"><CENTER>';
var TD_end = '</CENTER></TD>';
var prevM = month - 1;
var nextM = month + 1;

if (nextM == 12) {
	nextM = 0;
}

if (prevM == -1) {
	prevM = 11;
}

// BEGIN CODE FOR CALENDAR
cal =  '<html><head><title>Calendar</title></head><body>';
cal += "<style>a:link{cursor: hand}a:active{cursor: hand}a:hover{cursor: hand}a:visited{cursor: hand}body{cursor: default}</style>";

// NOTE:
// Update the calendar.js reference below to reference where you
// put the calendar.js file.

// cal += '<SCRIPT SRC="calendar.js"></SCRIPT>';

cal += '<TABLE BORDER="1" CELLSPACING="0" CELLPADDING="0" BORDERCOLOR="BBBBBB" width="100%" height="200"><TR><TD>';
cal += '<TABLE BORDER="0" CELLSPACING="0" CELLPADDING="2" width="100%">' + TR_start;
cal += '<TD COLSPAN="' + DAYS_OF_WEEK + '" BGCOLOR="#EFEFEF"><CENTER><B>';
cal += month_of_year[month]  + '   ' + year + '</B>' + TD_end + TR_end;
cal += TR_start;

///////////////////////////////////
// DO NOT EDIT BELOW THIS POINT  //
///////////////////////////////////

// LOOPS FOR EACH DAY OF WEEK
for(index=0; index < DAYS_OF_WEEK; index++) {
    // PRINTS DAY
    cal += TD_start + day_of_week[index] + TD_end;
}

cal += TD_end + TR_end;
cal += TR_start;

// FILL IN BLANK GAPS UNTIL TODAY'S DAY
for(index=0; index < dateObj.getDay(); index++) {
    cal += TD_start + '  ' + TD_end;
}

// LOOPS FOR EACH DAY IN CALENDAR
for(index=0; index < DAYS_OF_MONTH; index++) {
    if( dateObj.getDate() > index ) {
        // RETURNS THE NEXT DAY TO PRINT
        week_day =dateObj.getDay();

        // START NEW ROW FOR FIRST DAY OF WEEK
        if(week_day == 0) {
            cal += TR_start;
        }

        if(week_day != DAYS_OF_WEEK) {
            // SET VARIABLE INSIDE LOOP FOR INCREMENTING PURPOSES
            var day  = dateObj.getDate();

            // PRINTS DAY
            cal += TD_start + "<span onclick='window.opener.update(" + month + "," + day + ")' style='cursor:hand;font-weight:bold;background:#EFEFEF;width:22px;'>" + day + "</span>" + TD_end;
        }

        // END ROW FOR LAST DAY OF WEEK
        if(week_day == DAYS_OF_WEEK) {
            cal += TR_end;
        }
    }

    // INCREMENTS UNTIL END OF THE MONTH
    dateObj.setDate(dateObj.getDate()+1);

}// end for loop

cal += '</center></td></TR></table></TABLE><br>';
cal += '<div align="center"><a href="javascript:" onClick="window.opener.loadCalendar(' + prevM + ');">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;&nbsp;';
cal += '<a href="javascript:" onClick="window.opener.loadCalendar(' + nextM + ');">&gt;&gt;</a><br><br></div>';
cal += '<div align="right"><a href="javascript:window.close();">close</a></div>';
cal += '</body></html>';

//  PRINT CALENDAR
testWindow.document.write(cal);
}

var testWindow;
var formType;
var fName;

function openCalendar(formName,type) {
formType=type;
fName=formName;
testWindow = window.open('','dates','width=360,height=300,resizable=1,status=1,menubar=0,location=0');
loadCalendar(document.forms[fName].elements[formType+'Month'].selectedIndex);
}