/*banner medium rectangle 1 */
function b1_1()
{
document.getElementById("b1").innerHTML = '
';
setTimeout ( 'b1_2()', 20000 );
}
function b1_2()
{
document.getElementById("b1").innerHTML = '';
setTimeout ( 'b1_1()', 20000 );
}
/* ------------------------------------------------------------------------------------------------------------------------------- */
/*banner medium rectangle 2 */
function b2_1()
{
document.getElementById("b2").innerHTML = '
';
}
/* ------------------------------------------------------------------------------------------------------------------------------- */
/*banner medium rectangle 3 */
function b3_1()
{
document.getElementById("b3").innerHTML = '';
}
/* ------------------------------------------------------------------------------------------------------------------------------- */