function SubMenu(itemName)
{
        var elm = document.getElementById('septics');
        elm.style.display='none';
        
        var elm = document.getElementById('drainage');
        elm.style.display='none';

        var elm = document.getElementById('sewer');
        elm.style.display='none';

        var elm = document.getElementById('pipes');
        elm.style.display='none';

        var elm = document.getElementById('outdoor');
        elm.style.display='none';

        var elm = document.getElementById('grease');
        elm.style.display='none';

        var elm = document.getElementById('sewage');
        elm.style.display='none';

        var elm = document.getElementById('pumps');
        elm.style.display='none';

        var elm = document.getElementById('storm');
        elm.style.display='none';

        var elm = document.getElementById('tank');
        elm.style.display='none';

        var elm = document.getElementById('boiler');
        elm.style.display='none';

        var elm = document.getElementById('radiators');
        elm.style.display='none';

        var elm = document.getElementById('heatexchangers');
        elm.style.display='none';

        var elm = document.getElementById('boiler');
        elm.style.display='none';

        var elm = document.getElementById('inside');
        elm.style.display='none';

        var elm = document.getElementById('outside');
        elm.style.display='none';

        var elm = document.getElementById('objects');
        elm.style.display='none';


        if (itemName == 'septics')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'drainage')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'sewer')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'pipes')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'outdoor')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'grease')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'sewage')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'pumps')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'storm')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'tank')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'boiler')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'radiators')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';

        }
        else if (itemName == 'heatexchangers')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'inside')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'outside')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
        else if (itemName == 'objects')
        {
                var elm = document.getElementById(itemName);
                elm.style.display='block';
        }
}