function validate(form) { 
    if (form.txtGuest.value.length == 0) 
    { 
        alert("Please enter your Guest Name.") 
        form.txtGuest.focus() 
        return false 
    } 

    if (form.cmbRoomType.value.length == 0) 
    { 
        alert("Please select Room Type.") 
        form.cmbRoomType.focus() 
        return false 
    } 

    if (form.arrDD.value.length == 0) 
    { 
        alert("Please select Day.") 
        form.arrDD.focus() 
        return false 
    }     

    if (form.arrMM.value.length == 0) 
    { 
        alert("Please select Month.") 
        form.arrMM.focus() 
        return false 
    }
    
    if (form.arrYY.value.length == 0) 
    { 
        alert("Please select Year.") 
        form.arrYY.focus() 
        return false 
    }    

    if (form.depDD.value.length == 0) 
    { 
        alert("Please select Day.") 
        form.depDD.focus() 
        return false 
    }     

    if (form.depMM.value.length == 0) 
    { 
        alert("Please select Month.") 
        form.depMM.focus() 
        return false 
    }
    
    if (form.depYY.value.length == 0) 
    { 
        alert("Please select Year.") 
        form.depYY.focus() 
        return false 
    }

    
    if (form.txtName.value.length == 0) 
    { 
        alert("Please enter your Name.") 
        form.txtName.focus() 
        return false 
    } 

    if (form.txtAddr.value.length == 0) 
    { 
        alert("Please enter your Address.") 
        form.txtAddr.focus() 
        return false 
    } 

    if (form.txtPhone.value.length == 0) 
    { 
        alert("Please enter your Phone Number.") 
        form.txtPhone.focus() 
        return false 
    } 
    
    if (form.txtEmail.value.length == 0) 
    { 
        alert("Please enter your e-mail address.") 
        form.txtEmail.focus() 
        return false 
    } 

    if (form.txtEmail.value.indexOf("@") == -1) 
    { 
        alert("Please enter a valid e-mail address."); 
        form.txtEmail.focus(); 
        return false; 
    } 

    if (form.cmbPayMode.value.length == 0) 
    { 
        alert("Please select payment mode.") 
        form.cmbPayMode.focus() 
        return false 
    } 

//   if (form.zipCode.value.length == 0) 
//   { 
//       alert("Please enter your Zip Code.") 
//       form.zipCode.focus() 
//       return false 
//   } 
//
//   if (form.zipCode.value,length > 5) 
//   { 
//       alert("Please enter your 5 digit zip code.") 
//       form.zipCode.focus() 
//       return false 
//   } 
}