function leftTree(){
	var value= document.getElementById("c1").value;
	var tree = new YAHOO.widget.TreeView('tree_g_c');
	var root = tree.getRoot();

// left_tree START //
		var c1_flag_1 = false;
		if(value == 1){
			c1_flag_1 = true;
		}
		var G_C1_1 = new YAHOO.widget.TextNode('<a href="/topics-list/1/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学" class="chat" /></a><a href="/hosts-list/1/jp">語学 (109)</a>', root, c1_flag_1);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/1/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; 英語" class="chat" /></a><a href="/hosts-list/1/1/jp">英語 (77)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/2/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; 中国語" class="chat" /></a><a href="/hosts-list/1/2/jp">中国語 (3)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/10/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; ヒンディー/ウルドゥー" class="chat" /></a><a href="/hosts-list/1/10/jp">ヒンディー/ウルドゥー (0)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/6/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; スペイン語" class="chat" /></a><a href="/hosts-list/1/6/jp">スペイン語 (7)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/11/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; ロシア語" class="chat" /></a><a href="/hosts-list/1/11/jp">ロシア語 (0)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/9/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; フランス語" class="chat" /></a><a href="/hosts-list/1/9/jp">フランス語 (1)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/12/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; アラビア語" class="chat" /></a><a href="/hosts-list/1/12/jp">アラビア語 (0)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/13/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; ポルトガル語" class="chat" /></a><a href="/hosts-list/1/13/jp">ポルトガル語 (0)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/15/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; マレー語" class="chat" /></a><a href="/hosts-list/1/15/jp">マレー語 (0)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/14/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; ベンガル語" class="chat" /></a><a href="/hosts-list/1/14/jp">ベンガル語 (0)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/7/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; 日本語" class="chat" /></a><a href="/hosts-list/1/7/jp">日本語 (11)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/5/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; ドイツ語" class="chat" /></a><a href="/hosts-list/1/5/jp">ドイツ語 (1)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/4/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; イタリア語" class="chat" /></a><a href="/hosts-list/1/4/jp">イタリア語 (3)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/3/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; 韓国語" class="chat" /></a><a href="/hosts-list/1/3/jp">韓国語 (1)</a>', G_C1_1, false);
		new YAHOO.widget.TextNode('<a href="/topics-list/1/8/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 語学 &gt; その他" class="chat" /></a><a href="/hosts-list/1/8/jp">その他 (5)</a>', G_C1_1, false);

		var c1_flag_9 = false;
		if(value == 9){
			c1_flag_9 = true;
		}
		var G_C1_9 = new YAHOO.widget.TextNode('<a href="/topics-list/9/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; ワーキングホリデー" class="chat" /></a><a href="/hosts-list/9/jp">ワーキングホリデー (46)</a>', root, c1_flag_9);

		var c1_flag_8 = false;
		if(value == 8){
			c1_flag_8 = true;
		}
		var G_C1_8 = new YAHOO.widget.TextNode('<a href="/topics-list/8/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 観光" class="chat" /></a><a href="/hosts-list/8/jp">観光 (89)</a>', root, c1_flag_8);

		var c1_flag_2 = false;
		if(value == 2){
			c1_flag_2 = true;
		}
		var G_C1_2 = new YAHOO.widget.TextNode('<a href="/topics-list/2/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 農業 / 牧場" class="chat" /></a><a href="/hosts-list/2/jp">農業 / 牧場 (12)</a>', root, c1_flag_2);

		var c1_flag_4 = false;
		if(value == 4){
			c1_flag_4 = true;
		}
		var G_C1_4 = new YAHOO.widget.TextNode('<a href="/topics-list/4/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 漁業" class="chat" /></a><a href="/hosts-list/4/jp">漁業 (1)</a>', root, c1_flag_4);

		var c1_flag_6 = false;
		if(value == 6){
			c1_flag_6 = true;
		}
		var G_C1_6 = new YAHOO.widget.TextNode('<a href="/topics-list/6/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 雪国" class="chat" /></a><a href="/hosts-list/6/jp">雪国 (5)</a>', root, c1_flag_6);

		var c1_flag_5 = false;
		if(value == 5){
			c1_flag_5 = true;
		}
		var G_C1_5 = new YAHOO.widget.TextNode('<a href="/topics-list/5/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 島国 / トロピカル" class="chat" /></a><a href="/hosts-list/5/jp">島国 / トロピカル (5)</a>', root, c1_flag_5);

		var c1_flag_10 = false;
		if(value == 10){
			c1_flag_10 = true;
		}
		var G_C1_10 = new YAHOO.widget.TextNode('<a href="/topics-list/10/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; 日帰り/ホームビジット" class="chat" /></a><a href="/hosts-list/10/jp">日帰り/ホームビジット (27)</a>', root, c1_flag_10);

		var c1_flag_11 = false;
		if(value == 11){
			c1_flag_11 = true;
		}
		var G_C1_11 = new YAHOO.widget.TextNode('<a href="/topics-list/11/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; B&B / ホステル" class="chat" /></a><a href="/hosts-list/11/jp">B&B / ホステル (33)</a>', root, c1_flag_11);

		var c1_flag_7 = false;
		if(value == 7){
			c1_flag_7 = true;
		}
		var G_C1_7 = new YAHOO.widget.TextNode('<a href="/topics-list/7/jp"><img src="/common/img/chat.gif" width="12" height="13" alt="Topics &amp; Events &gt; その他" class="chat" /></a><a href="/hosts-list/7/jp">その他 (34)</a>', root, c1_flag_7);

// left_tree END //

	tree.draw();
}
