去掉了灰色倒三角的漂亮下拉列表_Dreamweaver教程

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<HTML>
<HEAD><title>漂亮的下拉框</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<SCRIPT>
// ViaSelect Environment Constants
var SS_ENV = new Object();
SS_ENV.IE_Version = new Number(((window.navigator.appVersion.split('; '))[1].split(' '))[1]);
SS_ENV.CR = new Object();
SS_ENV.CR.ReverseBackground = '#E2519C';
SS_ENV.CR.ReverseText = 'white';
SS_ENV.CR.Border = '#D55C9A';
SS_ENV.CR.BorderActive = '#FF6CB7';
SS_ENV.ImgPrefix = 'http://www.viafriend.com/images';
SS_ENV.DefaultHeight = 20;
SS_ENV.ButtonWidth = 13;
SS_ENV.OptionsDivStyle = ''
' display:none;'
' z-index:10;'
' position:absolute;'
' border:1 solid ' SS_ENV.CR.Border ';'
' background-color:white;'
' scrollbar-face-color:#D4D0C8;'
' scrollbar-shadow-color:white;'
' scrollbar-highlight-color:#F6F5F4;'
' scrollbar-3dlight-color:white'
' scrollbar-darkshadow-color:#86837E;'
' scrollbar-track-color:#F6F5F4;'
' scrollbar-arrow-color:#86837E;';
SS_ENV.OptionNobrStyle = ''
' font-size:12px;'
' font-family:奔覆;';
// SaySelect Variables
var SS_VAR = new Object();
SS_VAR.DivDummy = document.createElement("DIV");
SS_VAR.SelectList = new Array();
SS_VAR.bEventAttached = false;

var SS_CreatedElements = new Object();

attachEvent("onunload", unloadObjects);

function SS_create (srcHTML, ListMax, bAutoDetect)
{
// property
this.ssID = SS_VAR.SelectList.length;
this.bOriginalSelect = (bAutoDetect && SS_ENV.IE_Version < 5.5);
this.select = SS_createElement(srcHTML);
this.selectedIndex = this.select.selectedIndex;
this.options = this.select.options;
this.width = parseInt(this.select.style.width);
this.height = (this.select.style.height) ? parseInt(this.select.style.height) : SS_ENV.DefaultHeight;
this.OptionHeight = this.height - 4;
this.bListDown = (ListMax && '-'==ListMax.toString().substr(0, 1)) ? false : true;
this.ListMax = (!isNaN(parseInt(ListMax))) ? Math.abs(ListMax) : 100;

this.Table;
this.TitleDiv;
this.TitleTable;
this.TitleWrapper;
this.OptionsDiv;
this.OptionsWrapper;
this.OptionsTable;
this.bFocused = false;
this.bExpanded = false;
this.bReverse = false;

// private method
this.isThisEventToBeCanceled = SS_isThisEventToBeCanceled;
this.toggleTitle = SS_toggleTitle;
this.syncSelectedIndex = SS_syncSelectedIndex;
this.toggleOptions = SS_toggleOptions;
this.turnOnOption = SS_turnOnOption;