function closeFunction(){
        var csId = '{!$CurrentPage.parameters.Id}' ;
        if (sforce.console.isInConsole()) {
              var loc = '/console#%2F' + csId + '/s?retURL=%2F' + csId +
       '&cas7=Closed&isdtp=vw';
              window.top.location.href=loc;
           } else {
             var loc = '/' + csId + '/s?retURL=%2F' + csId + '&cas7=Closed';
             window.top.location.href=loc;
        }
}