联动 地区城市的 转载

<SCRIPT LANGUAGE="JavaScript">
<!--
function CreateSelect(_FormName,_SName,_SValue,_Ds,_AllOptionStr,ShowType)
{
	//三级关链菜单通用版
	//作者:海娃， 有问题请到http://www.51windows.Net留言。
	if (_FormName=="")
		_FormName = "all"
	var _DsArr = _Ds.split("|")
	var _Ds1,_Ds2,_Ds3
	var _Ds1 = _DsArr[0]
	var _Ds2 = (_DsArr.length>1)?_DsArr[1]:_DsArr[0]
	var _Ds3 = (_DsArr.length>2)?_DsArr[2]:_DsArr[0]

	var _SNameArr = _SName.split("|")
	var _SName1,_SName2,_SName3
	var _SName1 = _SNameArr[0]
	var _SName2 = (_SNameArr.length>1)?_SNameArr[1]:_SNameArr[0]
	var _SName3 = (_SNameArr.length>2)?_SNameArr[2]:_SNameArr[0]

	var _SValueArr = _SValue.split("|")
	var _SValue1,_SValue2,_SValue3
	var _SValue1 = _SValueArr[0]
	var _SValue2 = (_SValueArr.length>1)?_SValueArr[1]:_SValueArr[0]
	var _SValue3 = (_SValueArr.length>2)?_SValueArr[2]:_SValueArr[0]

	if (ShowType==3){
		_AllOptionStr = _AllOptionStr.replace(/\(\(/ig,"\(\("+_Ds3+"\^")
		_AllOptionStr = _AllOptionStr.replace(/\{\{/ig,"\{\{"+_Ds2+"\(\("+_Ds3+"\*\*")
	}
	else if(ShowType==2){
		_AllOptionStr = _AllOptionStr.replace(/\{\{/ig,"\{\{"+_Ds2+"\(\("+_Ds3+"\*\*")
	}
	else if(ShowType==1){
		_AllOptionStr = _AllOptionStr.replace(/\(\(/ig,"\(\("+_Ds3+"\^")
	}
	var AllStr = _Ds1 + "{{"+ _Ds2 + "(("+ _Ds3 +"||"+_AllOptionStr
	//alert(AllStr)
	var _AR0 = AllStr.split("||");
	document.writeln("<select name=\"" + _SName1 + "\" size=\"1\" onChange=\""+_SName1+"redirect(this.options.selectedIndex)\">");
	for (var i1 = 0;i1 < _AR0.length;i1++)
	{
		var Area1Str = _AR0[i1];
		var _AR10 = Area1Str.split("{{");
		var _AR11 = _AR10[0].split("@");
		var Tstr1 = _AR11[0];
		var Vstr1 = (_AR11.length==2)?_AR11[1]:_AR11[0]
		document.writeln("<option value=\""+Vstr1+"\">"+Tstr1+"<\/option>");
	}
	document.writeln("<\/select>");

	document.writeln("<select name=\"" + _SName2 + "\" size=\"1\" onChange=\""+_SName1+"redirect1(this.options.selectedIndex)\">");
	var _AR111 = _Ds2.split("@");
	var Tstr11 = _AR111[0];
	var Vstr11 = (_AR111.length==2)?_AR111[1]:_AR111[0];
	document.writeln("<option value=\""+Vstr11+"\">"+Tstr11+"<\/option>");
	document.writeln("<\/select>");

	document.writeln("<select name=\"" + _SName3 + "\" size=\"1\">");
	var _AR222 = _Ds3.split("@");
	var Tstr22 = _AR222[0];
	var Vstr22 = (_AR222.length==2)?_AR222[1]:_AR222[0];
	document.writeln("<option value=\""+Vstr22+"\">"+Tstr22+"<\/option>");
	document.writeln("<\/select>");

	document.writeln("<S"+"CRIPT LANGUAGE=\"JavaScript\" defer>");
	document.writeln("<!--");
	document.writeln("var "+_SName1+"NewAllStr = \""+ AllStr +"\"");
	document.writeln("var "+_SName1+"_AR0 = "+_SName1+"NewAllStr.split(\"||\");");
	document.writeln("var "+_SName1+"groups=document."+ _FormName +"." + _SName1 + ".options.length;");
	document.writeln("var "+_SName1+"group=new Array("+_SName1+"groups)");
	document.writeln("for (i=0; i<"+_SName1+"groups; i++){");
	document.writeln("	"+_SName1+"group[i]=new Array();");
	document.writeln("}");
	document.writeln("for (var i1 = 0;i1 < "+_SName1+"_AR0.length;i1++){");
	document.writeln("	var Area1Str = "+_SName1+"_AR0[i1];");
	document.writeln("	var _AR10 = Area1Str.split(\"{{\");");
	document.writeln("	var _AR12 = _AR10[1].split(\"**\");");
	document.writeln("	for (var i2 = 0;i2 < _AR12.length;i2++){");
	document.writeln("		var Area2Str = _AR12[i2];");
	document.writeln("		var _AR20 = Area2Str.split(\"((\");");
	document.writeln("		var _AR211 = _AR20[0].split(\"@\");");
	document.writeln("		var Tstr2 = _AR211[0];");
	document.writeln("		var Vstr2 = (_AR211.length==2)?_AR211[1]:_AR211[0];");
	document.writeln("		"+_SName1+"group[i1][i2]=new Option(Tstr2,Vstr2);");
	document.writeln("	}");
	document.writeln("}");
	document.writeln("var "+_SName1+"temp = document."+ _FormName +"." + _SName2);
	document.writeln("function "+_SName1+"redirect(x){");
	document.writeln("	for (m="+_SName1+"temp.options.length-1;m>0;m--)");
	document.writeln("	"+_SName1+"temp.options[m]=null;");
	document.writeln("	for (i=0;i<"+_SName1+"group[x].length;i++){");
	document.writeln("		"+_SName1+"temp.options[i]=new Option("+_SName1+"group[x][i].text,"+_SName1+"group[x][i].value);");
	document.writeln("	}");
	document.writeln("	"+_SName1+"temp.options[0].selected=true");
	document.writeln("	"+_SName1+"redirect1(0)");
	document.writeln("}");
	document.writeln("var "+_SName1+"Group2s=document."+ _FormName +"." + _SName2 + ".options.length;");
	document.writeln("var "+_SName1+"Group2=new Array("+_SName1+"groups);");
	document.writeln("for (i=0; i<"+_SName1+"groups; i++){");
	document.writeln("	"+_SName1+"Group2[i]=new Array("+_SName1+"group[i].length)");
	document.writeln("	for (j=0; j<"+_SName1+"group[i].length; j++){");
	document.writeln("		"+_SName1+"Group2[i][j]=new Array()");
	document.writeln("	}");
	document.writeln("}");
	document.writeln("for (var i1 = 0;i1 < "+_SName1+"_AR0.length;i1++){");
	document.writeln("	var Area1Str = "+_SName1+"_AR0[i1]");
	document.writeln("	var _AR10 = Area1Str.split(\"{{\");");
	document.writeln("	var _AR12 = _AR10[1].split(\"**\");");
	document.writeln("	for (var i2 = 0;i2 < _AR12.length;i2++){");
	document.writeln("		var Area2Str = _AR12[i2]");
	document.writeln("		var _AR20 = Area2Str.split(\"((\");");
	document.writeln("		_AR212 = _AR20[1].split(\"^\");");
	document.writeln("		for (var i3 = 0;i3 < _AR212.length;i3++){");
	document.writeln("			Area3Str = _AR212[i3]");
	document.writeln("			_AR3 = Area3Str.split(\"@\");");
	document.writeln("			Tstr3 = _AR3[0]");
	document.writeln("			Vstr3 = (_AR3.length==2)?_AR3[1]:_AR3[0]");
	document.writeln("			"+_SName1+"Group2[i1][i2][i3]=new Option(Tstr3,Vstr3);");
	document.writeln("		}");
	document.writeln("	}");
	document.writeln("}");
	document.writeln("var "+_SName1+"temp1=document."+ _FormName +"." + _SName3 + "");
	document.writeln("function "+_SName1+"redirect1(y){");
	document.writeln("	for (m="+_SName1+"temp1.options.length-1;m>0;m--)");
	document.writeln("	"+_SName1+"temp1.options[m]=null");
	document.writeln("	for (i=0;i<"+_SName1+"Group2[document."+ _FormName +"." + _SName1 + ".options.selectedIndex][y].length;i++){");
	document.writeln("		"+_SName1+"temp1.options[i]=new Option("+_SName1+"Group2[document."+ _FormName +"." + _SName1 + ".options.selectedIndex][y][i].text," + _SName1 + "Group2[document."+ _FormName +"." + _SName1 + ".options.selectedIndex][y][i].value)");
	document.writeln("	}");
	document.writeln("	"+_SName1+"temp1.options[0].selected=true");
	document.writeln("}");
	document.writeln("\/\/-->");
	document.writeln("<\/script>");
	document.writeln("<s"+"cript language=\"JavaScript\">");
	document.writeln("<!--");
	document.writeln("function "+_SName1+"SetValue(){");
	document.writeln("	try{");
	document.writeln("		if (\""+_SValue1+"\"!=\"\"){");
	document.writeln("			document."+ _FormName +"."+_SName1+".value=\""+_SValue1+"\"");
	document.writeln("			"+_SName1+"redirect(document."+ _FormName +"."+_SName1+".options.selectedIndex);");
	document.writeln("			if (\""+_SValue2+"\"!=\"\"){");
	document.writeln("				document."+ _FormName +"."+_SName2+".value=\""+_SValue2+"\"");
	document.writeln("				"+_SName1+"redirect1(document."+ _FormName +"."+_SName2+".options.selectedIndex)");
	document.writeln("				if (\""+_SValue3+"\"!=\"\")");
	document.writeln("					document."+ _FormName +"."+_SName3+".value=\""+_SValue3+"\"");
	document.writeln("			}");
	document.writeln("		}");
	document.writeln("	}");
	document.writeln("	catch(e){");
	document.writeln("	}");
	document.writeln("}");
	document.writeln("window.attachEvent(\"onload\","+_SName1+"SetValue)");
	document.writeln("\/\/-->");
	document.writeln("<\/script>");
}
//-->
</script>

<SCRIPT LANGUAGE="JavaScript">
<!--
var AllStr1 = ""
+"东北地区{{"
	+"黑龙江((哈尔滨^齐齐哈尔^牡丹江^佳木斯^大庆^绥化^鹤岗^鸡西^黑河^双鸭山^伊春^七台河^大兴安岭"
	+"**吉林((长春^吉林^四平^辽源^通化^白山^松原^白城^延边"
	+"**辽宁((沈阳^大连^鞍山^抚顺^本溪^丹东^锦州^营口^阜新^辽阳^盘锦^铁岭^朝阳^葫芦岛"
+"||华北地区{{"
	+"北京((东城^西城^崇文^宣武^朝阳^丰台^石景山^海淀^门头沟^房山^通州^顺义^昌平^大兴^平谷^怀柔^密云^延庆"
	+"**天津((和平^东丽^河东^西青^河西^津南^南开^北辰^河北^武清^红挢^塘沽^汉沽^大港^宁河^静海^宝坻^蓟县"
	+"**山东((济南^青岛^淄博^枣庄^东营^烟台^潍坊^济宁^泰安^威海^日照^莱芜^临沂^德州^聊城^滨州^菏泽"
	+"**河北((石家庄^邯郸^邢台^保定^张家口^承德^廊坊^唐山^秦皇岛^沧州^衡水"
	+"**河南((郑州^开封^洛阳^平顶山^安阳^鹤壁^新乡^焦作^濮阳^许昌^漯河^三门峡^南阳^商丘^信阳^周口^驻马店^济源"
	+"**山西((太原^大同^阳泉^长治^晋城^朔州^吕梁^忻州^晋中^临汾^运城"
	+"**内蒙古((呼和浩特^包头^乌海^赤峰^呼伦贝尔盟^阿拉善盟^哲里木盟^兴安盟^乌兰察布盟^锡林郭勒盟^巴彦淖尔盟^伊克昭盟"
+"||华中地区{{"
	+"湖北((武汉^宜昌^荆州^襄樊^黄石^荆门^黄冈^十堰^恩施^潜江^天门^仙桃^随州^咸宁^孝感^鄂州"
	+"**湖南((长沙^常德^株洲^湘潭^衡阳^岳阳^邵阳^益阳^娄底^怀化^郴州^永州^湘西^张家界"
+"||华南地区{{"
	+"广东((广州^深圳^珠海^汕头^东莞^中山^佛山^韶关^江门^湛江^茂名^肇庆^惠州^梅州^汕尾^河源^阳江^清远^潮州^揭阳^云浮"
	+"**广西((南宁^柳州^桂林^梧州^北海^防城港^钦州^贵港^玉林^南宁地区^柳州地区^贺州^百色^河池"
	+"**福建((福州^厦门^莆田^三明^泉州^漳州^南平^龙岩^宁德"
	+"**海南((海口^三亚"
+"||西南地区{{"
	+"四川((成都^绵阳^德阳^自贡^攀枝花^广元^内江^乐山^南充^宜宾^广安^达川^雅安^眉山^甘孜^凉山^泸州"
	+"**重庆((万州^涪陵^渝中^大渡口^江北^沙坪坝^九龙坡^南岸^北碚^万盛^双挢^渝北^巴南^黔江^长寿^綦江^潼南^铜梁^大足^荣昌^壁山^梁平^城口^丰都^垫江^武隆^忠县^开县^云阳^奉节^巫山^巫溪^石柱^秀山^酉阳^彭水^江津^合川^永川^南川"
	+"**贵州((贵阳^六盘水^遵义^安顺^铜仁^黔西南^毕节^黔东南^黔南"
	+"**云南((昆明^大理^曲靖^玉溪^昭通^楚雄^红河^文山^思茅^西双版纳^保山^德宏^丽江^怒江^迪庆^临沧"
	+"**西藏((拉萨^日喀则^山南^林芝^昌都^阿里^那曲"
+"||西北地区{{"
	+"陕西((西安^宝鸡^咸阳^铜川^渭南^延安^榆林^汉中^安康^商洛"
	+"**甘肃((兰州^嘉峪关^金昌^白银^天水^酒泉^张掖^武威^定西^陇南^平凉^庆阳^临夏^甘南"
	+"**宁夏((银川^石嘴山^吴忠^固原"
	+"**青海((西宁^海东^海南^海北^黄南^玉树^果洛^海西"
	+"**新疆((乌鲁木齐^石河子^克拉玛依^伊犁^巴音郭勒^昌吉^克孜勒苏柯尔克孜^博尔塔拉^吐鲁番^哈密^喀什^和田^阿克苏"
+"||华东地区{{"
	+"上海((黄浦^卢湾^徐汇^长宁^静安^普陀^闸北^虹口^杨浦^闵行^宝山^嘉定^浦东^金山^松江^青浦^南汇^奉贤^崇明"
	+"**江苏((南京^镇江^苏州^南通^扬州^盐城^徐州^连云港^常州^无锡^宿迁^泰州^淮安"
	+"**浙江((杭州^宁波^温州^嘉兴^湖州^绍兴^金华^衢州^舟山^台州^丽水"
	+"**安徽((合肥^芜湖^蚌埠^马鞍山^淮北^铜陵^安庆^黄山^滁州^宿州^池州^淮南^巢湖^阜阳^六安^宣城^亳州"
	+"**江西((南昌市^景德镇^九江^鹰潭^萍乡^新馀^赣州^吉安^宜春^抚州^上饶"
+"||港澳台地区{{"
	+"香港((香港"
	+"**澳门((澳门"
	+"**台湾((台北^高雄^台中^台南^屏东^南投^云林^新竹^彰化^苗栗^嘉义^花莲^桃园^宜兰^基隆^台东^金门^马祖^澎湖"
+"||其它地区{{"
	+"其它((其它"
//-->
</SCRIPT>

<FORM name="HwForm">
<HR>选择一次<br>
<SCRIPT LANGUAGE="JavaScript">
CreateSelect("","S_13|S_23|S_33","","请选择地区@|请选择省份@|请选择城市@",AllStr1,0);
</SCRIPT>

<HR>选择三次<br>
<SCRIPT LANGUAGE="JavaScript">
CreateSelect("HwForm","S_1|S_2|S_3","华北地区|山东|济宁","请选择地区@|请选择省份@|请选择城市@",AllStr1,3);
</SCRIPT>

<SCRIPT LANGUAGE="JavaScript">
<!--
var AllStr2 = ""
+"笔记本{{"
	+"IBM((R32^T40^T42"
	+"**DELL((N600^M600"
+"||数码相机{{"
	+"CANON((A75^A80^A85"
	+"**SONY((S80^S60"
//-->
</SCRIPT>

<HR>选择二次<br><SCRIPT LANGUAGE="JavaScript">
CreateSelect("HwForm","S_11|S_21|S_31","笔记本|IBM|T42","请选择分类@|请选择品牌@|请选择系列@",AllStr2,2);
</SCRIPT>


<HR>选择二次<br><SCRIPT LANGUAGE="JavaScript">
CreateSelect("HwForm","S_12|S_22|S_32","","请选择分类@|请选择品牌@|请选择系列@",AllStr2,1);
</SCRIPT>
</FORM>

 来源：http://www.51windows.net/data/?url=/data/files/file_526.asp

 

 

还是上面来源地址  再添加一个二级联动的   非常感谢那位高手   大家有空去看看  很多好东西

<html>
<head>
<title>通用二级下拉菜单(改进版) - 51windows.Net</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="author" content="haiwa">
</head>
<body>
<script language="JavaScript">
<!--
function TwoSelectInit(so,dv1,dv2){
	var o1=so.o1;var o2=so.o2;var allstr=so.str;var dt1=so.dt1;var dt2=so.dt2;var selectonce=so.selectonce;
	var _s = "*|^@";
	var s1=new Array(),v1=new Array(),s2=new Array(),v2=new Array();
	var s1i = 0,s2i = 0;
	if(dt1!=""){
		if(!selectonce){allstr=dt1+_s.charAt(1)+_s.charAt(0)+allstr;}
		else{allstr=dt1+_s.charAt(1)+dt2+_s.charAt(0)+allstr;}
	}
	aa=allstr.split(_s.charAt(0));
	for(aai=0;aai<aa.length;aai++){
		aaa=aa[aai].split(_s.charAt(1));
		tmps1 = aaa[0].split(_s.charAt(3));
		s1[aai] = tmps1[0];v1[aai] = (tmps1.length==2)?tmps1[1]:tmps1[0];
		s2[aai] = new Array();v2[aai] = new Array();
		if(v1[aai]==dv1){s1i = aai;}
		bbbb=aaa[1];
		if(dt2!=""&&!selectonce){if(bbbb==""){bbbb=dt2;}else{bbbb=dt2+_s.charAt(2)+bbbb;}}
		bb=bbbb.split(_s.charAt(2));
		for(bbi=0;bbi< bb.length;bbi++){
			tmps2 = bb[bbi].split(_s.charAt(3));
			s2[aai][bbi] = tmps2[0];v2[aai][bbi] = (tmps2.length==2)?tmps2[1]:tmps2[0];
			if(v2[aai][bbi]==dv2){s2i = bbi;}
		}
	}
	for(var i=0;i<o1.options.length;i++){o1.remove(i);i--;}
	for(k=0;k<s1.length;k++){o1.options.add(new Option(s1[k],v1[k]));}
	o1.selectedIndex=s1i;
	for(var i=0;i<o2.options.length;i++){o2.remove(i);i--;}
	for(k=0;k<s2[s1i].length;k++){o2.options.add(new Option(s2[s1i][k],v2[s1i][k]));}
	o2.selectedIndex=s2i;
}
function HwTwoSelect(o1,o2,liststr,dt1,dt2,t){this.o1=o1;this.o2=o2;this.str=liststr;this.dt1=dt1;this.dt2=dt2;this.selectonce=t}
//-->
</SCRIPT>
<form method="post" name=myform>
选择一次：<select name="a" onchange="TwoSelectInit(test1,this.value)"></select>　<select name="b"></select><hr>
选择两次：<select name="aa" onchange="TwoSelectInit(test2,this.value)"></select>　<select name="bb"></select><hr>
有初始值：<select name="aaa" onchange="TwoSelectInit(test3,this.value)"></select>　<select name="bbb"></select>

</form>
<SCRIPT LANGUAGE="JavaScript">
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+"*收藏@fav|无忧视窗@http://www.51windows.Net/^蓝色理想@http://www.blueidea.com/^POPO@http://plod.popoever.net/"
+"";
var test1 = new HwTwoSelect(document.myform.a,document.myform.b,selecttext,"－分类－@","－网址－@",1);//最后的参数表示，选了一级菜单后，二级菜单是否还要显示“请选择”，1或true代码，不显示，0或false代表显示
TwoSelectInit(test1);

var test2 = new HwTwoSelect(document.myform.aa,document.myform.bb,selecttext,"－分类－@","－网址－@",0);
TwoSelectInit(test2);

var test3 = new HwTwoSelect(document.myform.aaa,document.myform.bbb,selecttext,"－分类－@","－网址－@",0);
TwoSelectInit(test3,"fav","http://www.51windows.Net/");
//-->
</SCRIPT>
<p>以下是示例代码，详细请查看源文件：<hr>
<p>&lt;form method="post" name=<font color="#FF00FF">myform</font>&gt;<br>
&lt;select name=&quot;<font color="#FF0000">select1</font>&quot; onchange=&quot;TwoSelectInit(<font color="#0000FF">ttt</font>,this.value)&quot;&gt;&lt;/select>　&lt;select  
name=&quot;<font color="#FF0000">select2</font>&quot;&gt;&lt;/select>&lt;hr><br>
&lt;/form></p>
<p>&lt;SCRIPT LANGUAGE="JavaScript"><br>  
&lt;!--<br>
var <font color="#008000">selecttext</font>=&quot;&quot;<br> 
+"搜索@search|Google@http://www.google.com/^Yahoo@http://www.yahoo.com/"<br>
+"*收藏@fav|无忧视窗@http://www.51windows.Net/^蓝色理想@http://www.blueidea.com/^POPO@http://plod.popoever.net/"<br>
+"";<br>
<br>
var <font color="#0000FF">ttt</font> = new HwTwoSelect(document.<font color="#FF00FF">myform</font>.<font color="#FF0000">select1</font>,document.<font color="#FF00FF">myform</font>.<font color="#FF0000">select2</font>,<font color="#008000">selecttext</font>,&quot;－分类－@","－网址－@",1);<br>
TwoSelectInit(<font color="#0000FF">ttt</font> ,&quot;fav&quot;,&quot;http://www.51windows.Net/&quot;);<br> 
<br>
//--><br>
&lt;/SCRIPT></p>
<p><font color="#FF0000">bug:在二级菜单有初始值时，如果表单重置，二级菜单的值会变为空</font></p>
</body>
</html>