function displayAbbreviations() {

if (!document.getElementsByTagName) return false;

if (!document.createElement) return false;

if (!document.createTextNode) return false;

var abbreviations = document.getElementsByTagName("abbr");

if (abbreviations.length < 1) return false;

var defs = new Array();

// 取得所有缩略词

for (var i = 0; i < abbreviations.length; i++) {

var current_abbr = abbreviations[i];

if (current_abbr.childNodes.length < 1) continue;

var definition = current_abbr.getAttribute("title");

var key = current_abbr.lastChild.nodeValue;

defs[key] = definition;

}

// 创建定义列表

var dlist = document.createElement("dl");

for (key in defs) {

var definition = defs[key];

// 创建定义标题

var dtitle = document.createElement("dt");

var dtitle_text = document.createTextNode(key);

dtitle.appendChild(dtitle_text);

var ddesc = document.createElement("dd");

var ddesc_text = document.createTextNode(definition);

ddesc.appendChild(ddesc_text);

// 把它们添加到定义列表

dlist.appendChild(dtitle);

dlist.appendChild(ddesc);

}

if (dlist.childNodes.length < 1) return false;

// 创建标题

var header = document.createElement("h2");

var header_text = document.createTextNode("Abbreviations");

header.appendChild(header_text);

// 把标题添加到页面主体

document.body.appendChild(header);

// 把自定义列表添加到页面主体

document.body.appendChild(dlist);

}

addLoadEvent(displayAbbreviations);