Sorry for the noob question, haven't used visualforce much. I couldn't find an example for this for a picklist field only checkbox but how do I only return the confirm dialogue for a specific value in the picklist being slected eg. 'Approved'.
<apex:page standardController="Funds_to_Trade__c">
<apex:form >
<apex:inputField value="{!Funds_to_Trade__c.Adviser_Approval__c}"
onchange="if(!confirm('PLEASE NOTE: By approving this you acknowledge that you have thoroughly checked over the record.')){return}"/>
</apex:form>