function show_picture(strona, pic_w, pic_h){
pic_l = (screen.width) ? (screen.width-pic_w)/2 : 0;
pic_t = (screen.height) ? (screen.height-pic_h)/2 : 0;
window.open(strona,'new','menubar=no, toolbar=no, location=no, scrollbars=no, resizable=no, status=no,width='+pic_w+', height='+pic_h+', left='+pic_l+', top='+pic_t).focus()
}

function show_picture_scroll(strona, pic_w, pic_h){
pic_l = (screen.width) ? (screen.width-pic_w)/2 : 0;
pic_t = (screen.height) ? (screen.height-pic_h)/2 : 0;
window.open(strona,'new','menubar=no, toolbar=no, location=no, scrollbars=yes, resizable=no, status=no,width='+pic_w+', height='+pic_h+', left='+pic_l+', top='+pic_t).focus()
}

function target_new(pag){
 if(typeof pag!='string')pag=pag.href
 window.open(pag,'new','menubar=yes, location=yes, resizable=yes, scrollbars=yes, status=yes, toolbar=yes, directories=yes').focus()
 return false
}