function poptut1() {
	window.open('./tutorials/tutorial1.php','','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=640,height=630,left=0,top=0');
}

function poptut2() {
	window.open('./tutorials/tutorial2.php','','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=640,height=630,left=0,top=0');
}

function poptut3() {
	window.open('./tutorials/tutorial3.php','','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=640,height=630,left=0,top=0');
}