<!-- Form Validation
 var frmvalidator = new Validator("booking");

 frmvalidator.setAddnlValidationFunction("DoCustomValidation"); 
frmvalidator.addValidation("postcode","req","Please enter Postcode.");
frmvalidator.addValidation("date","req","Please enter Date of Journey.");
frmvalidator.addValidation("hour","dontselect=0","Please select Hour of Journey.");
frmvalidator.addValidation("minutes","dontselect=0","Please select Minutes of Journey.");
frmvalidator.addValidation("passengers","dontselect=0","Please select Number of Passengers.");


 // -->