function open_popup(id, page, width, height) {
  // window.open("popup.php?page="+page+"&id="+id, page, "location=no,status=no,menubar=no,scrollbars=no,resizeable=no,height="+height+",width="+width);
   
var winl = (screen.width - width) / 2;
var wint = (screen.height - height) / 2;

window.open("popup.php?page="+page+"&id="+id, page, "location=no,status=no,menubar=no,scrollbars=no,resizeable=no,height="+height+",width="+width+",top="+wint+",left="+winl);

 }

 function open_popup_view(img, ext) {
   window.open("view1.php?image="+img+"&adr="+ext, img, "location=no,status=no,menubar=no,scrollbars=no,resizeable=no,height=300,width=300");
 }

 function open_store() {
   window.open("store.php", "store", "location=no, status=no, menubar=no, scrollbars=yes, resizeable=no, height=640, width=770");
 }

 function sendemail() {
   window.open("email.php", "email", "location=no, status=no, menubar=no, scrollbars=yes, resizeable=no, height=550, width=440");
 }