简单强大-多极下拉菜单--网页导航特效

<div align="center"><form name="isc"> <table border="0" cellspacing="0" cellpadding="0"> <tr align="center"> <td nowrap height="11"> <select name="example" size="1" onChange="redirect(this.options.selectedIndex)"> <option selected>★网页天使</option> <option>★CGI程序设计</option> <option>★FLASH欣赏</option> </select> <select name="stage2" size="1" onChange="redirect1(this.options.selectedIndex)"> <option value=" " selected></option>') <option value=" " selected>◤------第二层菜单------◢</option> <option value=" " selected>◤------第二层菜单------◢</option> </select> <select name="stage3" size="1" onChange="redirect2(this.options.selectedIndex)"> <option value=" " selected></option>') <option value=" " selected>◤------第三层菜单------◢</option> <option value=" " selected>◤------第三层菜单------◢</option> </select> </table> </form> </div> <script language="JavaScript"> <!-- var groups=document.isc.example.options.length var group=new Array(groups) for (i=0; i<groups; i++) group[i]=new Array() group[0][0]=new Option("----第二层菜单----"," "); group[1][0]=new Option("」第一类"," "); group[1][1]=new Option("」第二类","47"); group[1][2]=new Option("」第三类","46"); group[1][3]=new Option("」第四类","45"); group[2][0]=new Option("」第一类"," "); group[2][1]=new Option("」第二类","115"); group[2][2]=new Option("」第三类","116"); var temp=document.isc.stage2 function redirect(x){ for (m=temp.options.length-1;m>0;m--) temp.options[m]=null for (i=0;i<group[x].length;i++){ temp.options[i]=new Option(group[x][i].text,group[x][i].value) } temp.options[0].selected=true redirect1(0) } var secondGroups=document.isc.stage2.options.length var secondGroup=new Array(groups) for (i=0; i<groups; i++) { secondGroup[i]=new Array(group[i].length) for (j=0; j<group[i].length; j++) { secondGroup[i][j]=new Array() }} secondGroup[0][0][0]=new Option("----第三层菜单----"," "); secondGroup[1][0][0]=new Option("----第三层菜单----"," "); secondGroup[1][1][0]=new Option("」 第一节"," "); secondGroup[1][1][1]=new Option("」 第一节","../cgi/pagenew8.htm"); secondGroup[1][1][2]=new Option("」 第一节","../cgi/pagenew8.htm"); secondGroup[1][1][3]=new Option("」 第一节","../explain/route.htm"); secondGroup[1][2][0]=new Option("」第三类"," "); secondGroup[1][2][1]=new Option("第二节","../cgi/pagenew7.htm"); secondGroup[1][2][2]=new Option("第二节","../cgi/pagenew7.htm"); secondGroup[1][2][3]=new Option("第二节","../explain/route.htm"); secondGroup[1][3][0]=new Option("」第四类"," "); secondGroup[1][3][1]=new Option("第三节","../cgi/pagenew15.htm"); secondGroup[1][3][2]=new Option("第三节","../explain/route.htm"); secondGroup[2][0][0]=new Option("----第三层菜单----"," "); secondGroup[2][1][0]=new Option("」第三类"," "); secondGroup[2][1][1]=new Option("」第三节(1)","../pictures/cartoon/1.htm"); secondGroup[2][1][2]=new Option("」第三节(2)","../pictures/cartoon/2.htm"); secondGroup[2][1][3]=new Option("」第三节(3)","../pictures/cartoon/3.htm"); secondGroup[2][2][0]=new Option("」第四类"," "); secondGroup[2][2][1]=new Option("第三节l(1)","../pictures/email/1.htm"); secondGroup[2][2][2]=new Option("第三节(2)","../pictures/email/1.htm"); var temp1=document.isc.stage3 function redirect1(y){ for (m=temp1.options.length-1;m>0;m--) temp1.options[m]=null for (i=0;i<secondGroup[document.isc.example.options.selectedIndex][y].length;i++){ temp1.options[i]=new Option(secondGroup[document.isc.example.options.selectedIndex][y][i].text,secondGroup[document.isc.example.options.selectedIndex][y][i].value) } temp1.options[0].selected=true } function redirect2(){ window.open(temp1.value,"","toolbar=no,location=yes,directories=no,status=no,menubar=no,scrollbars=yes, resizable=yes,copyhistory=yes,width=700,height=450"); } //--> </script>