function show_flash(object)
{
document.getElementById('preved').innerHTML += object;
}
function show_flash_1(object)
{
document.getElementById('preved').innerHTML = '';
}
function show_main()
{
show_flash('');
}
function dell_main()
{
show_flash_1('');
}
function show(id1)
{
if(document.getElementById('1').style.display=="block")
{
show_flash('');
document.getElementById("1").style.display="none";
document.getElementById("2").style.display="block";
}
else
{
dell_main('');
document.getElementById("1").style.display="block";
document.getElementById("2").style.display="none";
}
}