Javascript OnClick error

Give this a shot = 

if("{!$Profile.Name}" =="System Administrator"){
    if("{!Opportunity.SOA_Sent__c}" == false){
        if("{!Opportunity.Notification_POC_Email__c}" !== ""){
                var OpportunityToUpdate = new sforce.SObject("Opportunity");
                OpportunityToUpdate.Id = "{!Opportunity.Id}";
                OpportunityToUpdate.SOA_Sent__c = true;
                var result = sforce.connection.update([OpportunityToUpdate]);
             if (result[0].success === "false"){
                    alert(result[0].errors.message);
                }
                else{
                    location.reload(true);
                }
            }
        else{
                alert("The Notification POC Email field cannot be blank!");
        }
    }
    else{
        alert("A SOA has already been sent for this Opportunity!");
    }
}
else{
    alert("You do not have permission to send SOA's!");
}