function uncache( url ){
		var d = new Date();
		var time = d.getTime();
		return url + "&uncache=" + time;
	} 
	
	function create_http_request(){
		var http = false;
		//Use IE's ActiveX items to load the file.
		if(typeof ActiveXObject != 'undefined') {
			try {http = new ActiveXObject("Msxml2.XMLHTTP");}
			catch (e) {
				try {http = new ActiveXObject("Microsoft.XMLHTTP");}
				catch (E) {http = false;}
			}
		//If ActiveX is not available, use the XMLHttpRequest of Firefox/Mozilla etc. to load the document.
		} else if (XMLHttpRequest) {
			try {http = new XMLHttpRequest();}
			catch (e) {http = false;}
		}
		return http;
	}
	
	//forum_vote
	var forum_vote_http_request = create_http_request();
	var global_topic_id;
	
	function forum_vote( action, topic_id ) {
		var ajax_url_base = "/ajax_forum_vote.php";
		var ajax_url_value = "topic_id=" + topic_id + "&action=" + action;
		var url = ajax_url_base + "?" + ajax_url_value;
		global_topic_id = topic_id;
		
		ajax_forum_vote_GET( uncache( url ) );
	}
	
	function ajax_forum_vote_GET( url ){
		forum_vote_http_request.open( 'GET', url, true );
		forum_vote_http_request.onreadystatechange = ajax_forum_vote_GET_onreadystatechange;
		forum_vote_http_request.send( null );
	}
	
	function ajax_forum_vote_GET_onreadystatechange(){
		if( forum_vote_http_request.readyState == 4 ){
			document.getElementById( "forum_vote_box_" + global_topic_id ).innerHTML = forum_vote_http_request.responseText;
		}
	}
	
	//vote_up
	var vote_up_http_request = create_http_request();
	
	function vote_up( i ){
		var sum_cnt = parseInt( document.getElementById( "sum_cnt_" + i ).getAttribute("sum_cnt") );
		var now_cnt = parseInt( document.getElementById( "sum_cnt_" + i ).innerHTML );
		
		if( sum_cnt >= now_cnt ){
			sum_cnt = sum_cnt + 1;
			document.getElementById( "sum_cnt_" + i ).innerHTML = sum_cnt;
			document.getElementById( "sum_cnt_" + i ).style.color='#ff8c61';
			document.getElementById( "vote_up_" + i ).style.backgroundPosition='-63px -630px';
			document.getElementById( "vote_down_" + i ).style.backgroundPosition='-101px -613px';
		} else {
			document.getElementById( "sum_cnt_" + i ).innerHTML = sum_cnt;
			document.getElementById( "sum_cnt_" + i ).style.color='black';
			document.getElementById( "vote_up_" + i ).style.backgroundPosition='-47px -630px';
		}
		
		var ajax_url_base = "/ajax_vote_up.php";
		var ajax_url_value = "i=" + i;
		var url = ajax_url_base + "?" + ajax_url_value;
		
		ajax_vote_up_GET( uncache( url ) );
	}
	
	function ajax_vote_up_GET( url ){
		vote_up_http_request.open( 'GET', url, true );
		vote_up_http_request.onreadystatechange = ajax_vote_up_GET_onreadystatechange;
		vote_up_http_request.send( null );
	}
	
	function ajax_vote_up_GET_onreadystatechange(){		
		if( vote_up_http_request.readyState == 4 ){
		}
	}
	
	//vote_down
	var vote_down_http_request = create_http_request();
	
	function vote_down( i ){		
		var sum_cnt = parseInt( document.getElementById( "sum_cnt_" + i ).getAttribute("sum_cnt") );
		var now_cnt = parseInt( document.getElementById( "sum_cnt_" + i ).innerHTML );
		
		if( sum_cnt <= now_cnt ){
			sum_cnt = sum_cnt - 1;
			document.getElementById( "sum_cnt_" + i ).innerHTML = sum_cnt;
			document.getElementById( "sum_cnt_" + i ).style.color='#9494ff';
			document.getElementById( "vote_down_" + i ).style.backgroundPosition='-31px -630px';
			document.getElementById( "vote_up_" + i ).style.backgroundPosition='-47px -630px';
		} else {
			document.getElementById( "sum_cnt_" + i ).innerHTML = sum_cnt;
			document.getElementById( "sum_cnt_" + i ).style.color='black';
			document.getElementById( "vote_down_" + i ).style.backgroundPosition='-101px -613px';
		}
		
		var ajax_url_base = "/ajax_vote_down.php";
		var ajax_url_value = "i=" + i;
		var url = ajax_url_base + "?" + ajax_url_value;
		ajax_vote_down_GET( uncache( url ) );
	}
	
	function ajax_vote_down_GET( url ){
		vote_down_http_request.open( 'GET', url, true );
		vote_down_http_request.onreadystatechange = ajax_vote_down_GET_onreadystatechange;
		vote_down_http_request.send( null );
	}
	
	function ajax_vote_down_GET_onreadystatechange(){
		if( vote_down_http_request.readyState == 4 ){
		}
	}
	
	//set_fav
	var set_fav_http_request = create_http_request();
	
	function set_fav( i ){
		var set_fav = document.getElementsByClassName( "set_fav_" + i );
		var set_fav_value = parseInt( set_fav[0].getAttribute( "set_fav" ) );
		
		for( var x=0; x<set_fav.length; x++ ){
			if( set_fav_value == 1 ){
				set_fav[x].setAttribute( "set_fav", 0 );
			//	set_fav[x].style.backgroundImage="url(/images/favorite_n.gif)";
        set_fav[x].childNodes[0].className = "glyphicon glyphicon-star-empty lz-white lz-tr50";
  } else {
				set_fav[x].setAttribute( "set_fav", 1 );
			//	set_fav[x].style.backgroundImage="url(/images/favorite_y.gif)";
        set_fav[x].childNodes[0].className = "glyphicon glyphicon-star lz-gold spin-6";
			}
		}
		
		var ajax_url_base = "/ajax_set_fav.php";
		var ajax_url_value = "i=" + i;
		var url = ajax_url_base + "?" + ajax_url_value;
		ajax_set_fav_GET( uncache( url ) );
	}
	
	function ajax_set_fav_GET( url ){
		set_fav_http_request.open( 'GET', url, true );
		set_fav_http_request.onreadystatechange = ajax_set_fav_GET_onreadystatechange;
		set_fav_http_request.send( null );
	}
	
	function ajax_set_fav_GET_onreadystatechange(){
		if( set_fav_http_request.readyState == 4 ){
		}
	}