function portfolio_popup() {
	window.open('portfolio/portfolio-popup.html','Portfolio','status=no,location=no,resizable=no,scrollbars=no,menubar=no,width=980,height=750,left=50,top=50,');
}
function tour_popup() {
	window.open('tour/index.html','Portfolio','status=no,location=no,resizable=no,scrollbars=no,menubar=no,width=990,height=770,left=50,top=50,');
}
function profile_popup(img) {
	window.open('images/' + img,'Profile','status=no,location=no,resizable=no,scrollbars=no,menubar=no,width=650,height=500,left=50,top=50,');
}