mk = function (objectId) {
				return document.getElementById(objectId);
			}
			var id = 1;
			function change_search(tid) {
				id = tid;
				mk('search_com').className = '';
				mk('search_pro').className = '';
				mk('search_info').className = '';
				mk('search_news').className = '';

				switch(id) {
					case 1:
					mk('search_com').className = 'black';
					break;
					case 2:
					mk('search_pro').className = 'black';
					break;
					case 3:
					mk('search_info').className = 'black';
					break;
					case 4:
					mk('search_news').className = 'black';
					break;
				}
				return false;
			}

			function sub_search() {
				if (mk('keyword').value == '') {
					alert('ÇëÊäÈë¹Ø¼ü´Ê!');
					document.getElementById("keyword").focus();
					return false;
				}
				switch(id) {
					case 1:
						window.open('http://www.zgxf88.com/company/?keyword='+escape(mk('keyword').value));
					break;
					case 2:
						window.open('http://www.zgxf88.com/company/?keyword='+escape(mk('keyword').value));
					break;
					case 3:
						window.open('http://www.zgxf88.com/info/Search.asp?keyword='+escape(mk('keyword').value));
					break;
					case 4:
						window.open('http://www.zgxf88.com/news/search_news.asp?keyword='+escape(mk('keyword').value));
					break;
				}
				return false;
			}