function t(i)
	{
    var e = document.getElementById(i);
    var t = e.className;
    if (t.match('invisible'))
		{
        t = t.replace(/invisible/gi, 'visible');
       	}
	else
		{
        t = t.replace(/visible/gi, 'invisible');
       	}
    e.className = t;
    }
function deleteText(passedObject)
	{
	var textField_txt = passedObject;
    textField_txt.value = "";
    }