function bookingDate() { var myDate = new Date(document.getElementById("bookingdate").value); alert (myDate); if ( myDate.getTime() < today.getTime() ){ alert ( " please enter today or future date "); } } function showCarImage(){ if (!document.images) return document.images.pictures.src= document.booking_form.picture.options[document.booking_form.picture.selectedIndex].value carSelected = document.booking_form.picture.value; calculateFare(); } function chooseAirport(){ if (document.getElementById("airportSelection").value == 'Heathrow'){ document.booking_form.terminalSelect.disabled=false; //document.getElementById("terminalSelect"). = false; } else { document.booking_form.terminalSelect.disabled=true; } airport = document.booking_form.airportSelection.value; calculateFare(); } //end function chooseAirport() function doSelectTime(a){ if(a=="From") { document.booking_form.est_hour.disabled=false; document.booking_form.est_min.disabled=false; } else { document.booking_form.est_hour.disabled=true; document.booking_form.est_min.disabled=true; } journeytype = document.booking_form.selectType.value; calculateFare(); } // end function doSelectTime(a) function calculateFare(){ stringCalculatedCost = "