function showForm() { 

    var displayAddParams = document.getElementById('addParams');

    var displayAdding = document.getElementById ('adding');

    displayAddParams.style.visibility = 'hidden';

    displayAdding.style.visibility = 'visible'; 

} 

function hideForm() { 

    var displayAddParams = document.getElementById('addParams');

    var displayAdding = document.getElementById ('adding');

    displayAddParams.style.visibility = 'visible';

    displayAdding.style.visibility = 'hidden';

} 

function showLoca() { 

    var displayloca = document.getElementById('loca_show');

    var putDraw = document.getElementById ('locadraw');

    displayloca.style.visibility = 'hidden';

    putDraw.style.visibility = 'visible'; 

} 

function hideLoca() { 

    var displayloca = document.getElementById('loca_show');

    var putDraw = document.getElementById ('locadraw');

    displayloca.style.visibility = 'visible';

    putDraw.style.visibility = 'hidden';

}