function showHideDivs(){ 
 var i,visStr,obj,args=showHideDivs.arguments;
 for(i=0;i<(args.length-1);i+=2){
  if((obj=findObj(args[i]))!=null){
   visStr=args[i+1];
   if(obj.style){
    obj=obj.style;
    if(visStr=='show')visStr='';
    else if(visStr=='hide')visStr='none';
   }
   obj.display = visStr;
  }
 }
}
function hideDiv(id){
 showHideDivs(id,'hide');
}
function showDiv(id){
 showHideDivs(id,'show');
}