function meret1() {
 window.open("meret1.html","popup_1","toolbar=0,location=top,status=0,menubar=0,scrollbars=1,resizable=0,dependent=1,width=750,height=270,screenX=0,screenY=0");
}
function meret2() {
 window.open("meret2.html","popup_2","toolbar=0,location=top,status=0,menubar=0,scrollbars=1,resizable=0,dependent=1,width=750,height=270,screenX=0,screenY=0");
}