CRM 2011 Hidden Tab in JavaScript

CRM 2011 Hidden Tab  in JavaScript

JavaScript:

function hiddenTab ()
{
    var statecode;
    var statecodeValue;  
    var visible = false;

    statecode = Xrm.Page.data.entity.attributes.get("statecode");  

    if (statecode != null && statecode.getValue() != null)
    {      
             statecodeValue = statecode.getValue();      
             if(statecodeValue != "1")          
             visible = true;  
    }

    Xrm.Page.ui.tabs.get('tab_3').setVisible(visible);
}