function planwindow1()
{
window.open("firstclass1.html","first","height=400,width=400,left=10,top=10")
}

function planwindow2()
{
window.open("firstclass2.html","first2","height=400,width=450,left=10,top=10")
}

function fotokl3()
{
window.open("firstclass3.html","first3","height=500,width=650,left=10,top=10")
}

function planwindowsongs()
{
window.open("songs.html","first4","height=350,width=550,left=10,top=10")
}
function joy()
{
window.open("firstclass_joy.html","first5","height=400,width=500,left=10,top=10")
}