function change1()
{
main.location="p1.htm";
pic.location="p1a.htm";
}
function change2()
{
main.location="p2.htm";
pic.location="p2a.htm";
}
function change3()
{
main.location="p3.htm";
pic.location="p3a.htm";
}
function change4()
{
main.location="p4.htm";
pic.location="p4a.htm";
}
function change5()
{
main.location="p5.htm";
pic.location="p5a.htm";
}
function change6()
{
main.location="p6.htm";
pic.location="p6a.htm";
}
function change7()
{
main.location="p7.htm";
pic.location="p7a.htm";
}
function change8()
{
main.location="p8.htm";
pic.location="p8a.htm";
}
function change11()
{
main.location="p11.htm";
pic.location="p11a.htm";
}
function change9()
{
main.location="p9.htm";
pic.location="blank_onder.htm";
}

function change12()
{
main.location="eindejaarsfolder.htm";
pic.location="blank_onder.htm";
}

function change13()
{
main.location="video.htm";
pic.location="blank_onder.htm";
}