function openwindows(numan)
{
    window.open("occasion-"+numan+".html", "annonce","directories=no,location=no,rezisable=no,width=720,height=530,scrollbars=0,left=" +
		((screen.width - 720)/2) + ",top=" + ((screen.height - 530)/2) )
}
function openwindowsFoto(cat, photo)
{
    window.open("photo-"+cat+"-"+photo+".html", "annonce","directories=no,location=no,rezisable=no,width=550,height=450,scrollbars=0,left=" +
		((screen.width - 550)/2) + ",top=" + ((screen.height - 450)/2) )
}
function openwindowsPlan()
{
    window.open("plan_acces.html", "plan","directories=no,location=no,rezisable=no,width=660,height=600,scrollbars=0,left=" +
		((screen.width - 660)/2) + ",top=" + ((screen.height - 600)/2) )
}