function isShow(tab_id,div_id,t_Style)    //
{
   for(var i = 0;i < 2;i++)
   {
    document.getElementById("divs_"+i).style.display="none";
	  document.getElementById("tabs_"+i).style.backgroundImage='url(../images/bg_box2.jpg)';
	  document.getElementById("tabs_"+i).className="li";
   }
   /*...*/
   document.getElementById(div_id).style.display=t_Style;
   document.getElementById(tab_id).style.backgroundImage='url(../images/bg_box1.jpg)';
   document.getElementById(tab_id).className="on";
}