function searchobj(objname) {return document.getElementById(objname);}
	function nosearch(){
		alert(1);
		if(document.getElementById('keyword').value.length < 2){
			alert('关键字不能少于2个字符');
			return false;
		}
		return ture;
	}
	function showChannel(){
		searchobj("Channel").style.display="block";
	}
	/*document.body.onmousedown = function(){
		if(searchobj("Channel").style.display == 'block'){
			//alert(searchobj("Channel").style.display);
			searchobj("Channel").style.display="none";
		}
	}*/
	function  changeSearch(value,name){
//	alert(elm.innerHTML);
//		elm.style.backgroundColor = '';
		//$(".nav_"+value).css('background','#ffffff');
		switch(value){
			case  "1":
				searchobj("keyword").name = "srchtxt";
				searchobj("formss").method = "post"
				searchobj("formss").action = 'http://club.139nb.cn/search.php?orderby=lastpost&ascdesc=desc&searchsubmit=yes';
				break;
			case "2":
				searchobj("keyword").name = "keyword";
				searchobj("formss").method = "post"
				searchobj("formss").action = 'http://movie.139nb.cn/app/searchFilm.aspx';

				break;
			case "3":
				alert("游戏频道暂不提供搜索功能");
				searchobj('lanmu').value = 1;
				changeSearch("1");
				break;
			case "4":

				searchobj("keyword").name="keyword";
				searchobj("formss").method = "get"
				searchobj("formss").action = 'http://music.139nb.cn/search.php';
				break;
			default:

		}
		searchobj('lanmu').value = value;
		searchobj("Channel").style.display="none";
		searchobj("showChannel").innerHTML = name;
	}

	function focus_true(obj){
		var ucolor = obj.style.color.toUpperCase();
		if(ucolor== 'RGB(170, 170, 170)' || ucolor == '#AAAAAA'){
			obj.value = '';
		}
		obj.style.color = '#000000';
	}
	function blur_true(obj){
		if(obj.value == ''){
			obj.value = document.getElementById(obj.id+'_t').value;
			obj.style.color = '#AAAAAA';
		}
	}
		var host = document.domain;
		var webname = host.replace ('139nb.cn','');
		switch(webname){
			case "music.":
				searchobj("lanmu").value=4;
				changeSearch("4","音 乐");
				break;
			case "movie.":
				searchobj("lanmu").value=2;
				changeSearch("2","影 视");
				break;
			default:
				/*searchobj("lanmu").value=1;
				changeSearch("1","社 区");*/
		}