function OpenContactWindow()
{
	window.open('contact.html','contact','scrollbars=yes,resizable=yes,width=640,height=800');

}
function OpenBookWindow(psBook, psName)
{
	window.open(psBook,psName,'scrollbars=yes,resizable=yes,width=640,height=770');

}
function OpenSmallBookWindow(psBook, psName)
{
	window.open(psBook,psName,'scrollbars=yes,resizable=yes,width=450,height=500');

}