function showLessons(){
$('#lessons').slideToggle(500); return false;
}
function showOverall() {
$('#overalls').slideToggle(500); return false;
}
function showExcercises() {
$('#excercises').slideToggle(500);
return false;
}
function printSelected(id) {
str = document.getElementById(id).innerHTML
newwin = window.open('', 'printwin', 'left=100,top=100,width=400,height=400')
newwin.document.write('\n\n')
newwin.document.write('Print Page\n')
newwin.document.write('