function open_fixed_win(url, width, height, scrollbar){
	  referer = window.open(url, 'win', 'width='+width+', height='+height+', scrollbars='+scrollbar)
	  referer.moveTo((screen.availWidth-width)/2, (screen.availHeight-height)/2);
	  referer.focus();
}
function show_others(){
//others.style.display='';
if(others.style.display == 'none'){
 others.style.display = ''
} else {
  others.style.display = 'none'
}
}