if('{!Opportunity.Commitment_Type__c}' == 'Portfolio'){
if('{!CONTAINS(Opportunity.RecordTypeId,$Label.ENT_CommitRT_ID)}'){
    window.open('/apex/VF_opportunityProductEntry?id={!Opportunity.Id}')
}
}
else if('{!CONTAINS(Opportunity.RecordTypeName_ENT__c,"Premier")}'){

if(window.location.href.indexOf("premierreseller") > -1){
window.open('/premierreseller/apex/opportunityProductEntry?id={!Opportunity.Id}')
}
else {
window.open('/apex/opportunityProductEntry?id={!Opportunity.Id}')
}
}

else if(window.location.href.indexOf("premierreseller") > -1){
    window.open('/premierreseller/p/opp/SelectSearch?addTo={!Opportunity.Id}&retURL=%2F{!Opportunity.Id}')
}

else if('{!CONTAINS(Opportunity.RecordTypeId,$Label.ENT_ExclusiveRT_ID)}'){
window.open('/apex/opportunityProductEntry_Exclusive?id={!Opportunity.Id}')
}

else{
    window.open('/p/opp/SelectSearch?addTo={!Opportunity.Id}&retURL=%2F{!Opportunity.Id}')
}