var os_pops = new Array();
function os_single_popup(link, name, params)
{
	need_new_popup = true;

	for( i=0; i<os_pops.length; i++ )
	{
		if( (os_pops[i] != null) && (name == os_pops[i].name) )
		{
			need_new_popup = false;
			os_pops[i].focus();
			break;
		}
	}
	if(need_new_popup)
	{
		os_pops[os_pops.length] = window.open(link.href,name,params);
	}
	return false;
}