// JavaScript Document
 var keyword_best_index, keyword_best_tid;
 var keyword_best_stat;

 keyword_best_index = 1;
 keyword_best_stat = 0;

 function onmouseover_keywordbest() {
    document.getElementById("keyword_best_area").style.display = "";
	keyword_best_stop();
 }

 function keyword_best_rolling() {
    var pre_index, next_index, max_index;

	max_index = document.getElementById('max_index').value;

	pre_index = keyword_best_index;
	if(keyword_best_index != max_index) {
	   next_index = keyword_best_index + 1;
	} else {
	   next_index = 1;
	}    

	document.getElementById("keyword_best_"+pre_index).style.display = "none";
	document.getElementById("keyword_best_"+next_index).style.display = "";
    keyword_best_index = next_index;

	keyword_best_tid = setTimeout(keyword_best_rolling,5000);
 }

 function keyword_best_start() {
	var stat;

    if(keyword_best_stat==1) {
	   return;
	}
    
	stat = document.getElementById("keyword_best_area").style.display;
	if(stat=="") {
	   return;
	}

	keyword_best_stat = 1;
    keyword_best_tid = setTimeout(keyword_best_rolling,5000);
 }

 function keyword_best_stop() {
	clearTimeout(keyword_best_tid);
	keyword_best_stat = 0;
 }

 keyword_best_stat = 1;
 keyword_best_tid = setTimeout(keyword_best_rolling,5000);
 
  STYLE_MOUSEOUT = function(e,obj,eid,stat) {
   var t = e ? e.relatedTarget : event.toElement;
   while(t){
    if(t == obj) {
	   return;
	}

    t = t.parentNode;
   }
   document.getElementById(eid).style.display = stat;
 }