Conditional Required Field

[Guest yakisir]

hi all,I am trying to make a field required if the radio button is selected as yes. I dont know how it is not doing it but here is my code below: if (trim(form.radio_trip.value) =='Y') && (dt_trip_start_date=='') { msg = "\n\t Trip Start Date"; ok = false; } if (!ok) alert(" The following fields are required: \n" + msg)I am trying to make the date field called "Trip Date" mandatory if radio button value is equal to 'Y'. I have used left trim also but did not work. I greatly appreciate if someone can assist me.Thanks.

[scott100]

ok first off trim() is a vbscript function.

 if ((form.radio_trip.value=="Y") && (dt_trip_start_date=="")){            }else alert("The following fields are required: Trip Start Date")

because there are 2 parts to the condition you must enclose it all in parenthesis.1 if statement with an else condition should do.try that.