http://www.slowfoodupstate.com/js/search.js

1//---------- 搜索表单验证
2jQuery( function() {
3	var searchTxt = jQuery("#search input:text[name='kws']").val();
4	jQuery("#search").submit( function() {
5		var s_searchTxt = jQuery(this).find("input:text[name='kws']").val();
6		var ridarr = jQuery(".selected").attr("id").split("_");
7		var rid=ridarr.pop();
8		if ( s_searchTxt == "" || s_searchTxt == searchTxt || s_searchTxt == "请输入搜索关键词" || s_searchTxt == "请输入搜索关键词！" ) {
9			jQuery(this).find("input:text[name='kws']").val("请输入搜索关键词！");
10			return false;
11		}
12		if(rid==0)
13		{
14			alert("请选择搜索栏目");
15			return false;
16		}
17	} ).find("input:text[name='kws']").focus( function() {
18		var s_searchTxt = jQuery(this).val();
19		if ( s_searchTxt == searchTxt || s_searchTxt == "请输入搜索关键词" || s_searchTxt == "请输入搜索关键词！" ) {
20			jQuery(this).val("");
21		}
22	} ).blur( function() {
23		var s_searchTxt = jQuery(this).val();
24		if ( s_searchTxt == "" || s_searchTxt == "请输入搜索关键词" || s_searchTxt == "请输入搜索关键词！" ) {
25			jQuery(this).val(searchTxt);
26		}
27	} );
28} );