function gethidden(elemId, status) 
{
    document.getElementById("iteminfo_1").style.visibility = 'hidden';
    document.getElementById("iteminfo_2").style.visibility = 'hidden';
    document.getElementById("iteminfo_3").style.visibility = 'hidden';
    document.getElementById("iteminfo_4").style.visibility = 'hidden';

    document.getElementById(elemId).style.visibility = 'visible';
}