function open_win() {
    window.open('http://travelspider.co.uk/topten/01/','01','width=800,height=600,toolbar=yes,menubar=yes')
    window.open('http://travelspider.co.uk/topten/02/','02','width=800,height=600,toolbar=yes,menubar=yes')
    window.open('http://travelspider.co.uk/topten/03/','03','width=800,height=600,toolbar=yes,menubar=yes')
    window.open('http://travelspider.co.uk/topten/04/','04','width=800,height=600,toolbar=yes,menubar=yes')
    window.open('http://travelspider.co.uk/topten/06/','06','width=800,height=600,toolbar=yes,menubar=yes')
    window.open('http://travelspider.co.uk/topten/07/','07','width=800,height=600,toolbar=yes,menubar=yes')
    window.open('http://travelspider.co.uk/topten/08/','08','width=800,height=600,toolbar=yes,menubar=yes')
    window.open('http://travelspider.co.uk/topten/09/','09','width=800,height=600,toolbar=yes,menubar=yes')
    window.open('http://travelspider.co.uk/topten/10/','10','width=800,height=600,toolbar=yes,menubar=yes')
    window.open('http://travelspider.co.uk/topten/11/','11','width=800,height=600,toolbar=yes,menubar=yes')
    }