JS实现简单易用的手机端浮动窗口显示效果

<style type="text/css">
.fdBonTel{ width:100%; height:53px; position:fixed; background:#0052ae; text-align:center; left:0; bottom:0; z-index:999; }
.fdOnline{ background:url(index/images/online.png) no-repeat; width:255px; height:181px; position:fixed; left:50%; margin-left:-128px; :40%; z-index:999; border-radius: 15px; box-shadow: 0 0 20px rgba(10, 2, 4, 0.75);}
.fdOnline .fdOClose{ width:44px; height:44px; display:block; margin-:-17px; margin-right:-6px;}
.fdOnline .fdOTel{ background:#CF3; width:127px; height:58px; display:block; margin-:123px;}
.fdOnline .fdOOn{ background:#036; width:128px; height:58px; display:block; margin-:96px;}
</style>
<div class="fdBonTel">
  <img src="index/images/fdTel.gif" usemap="#Maps">
  <map name="Maps" id="Maps">
    <area shape="rect" coords="2,2,79,52" onClick="openZoosUrl();">
      <area shape="rect" coords="77,2,166,52" href="tel:0855-8253310">
      <area shape="rect" coords="166,4,242,51" onClick="openZoosUrl();">
    <area shape="rect" coords="248,5,318,53" onClick="openZoosUrl();">
  </map>
</div>
<div class="fdOnline" id="fdOnline">
  <a href="###" class="fdOClose f_r" onclick="closeOnline();"><img src="index/images/closeBtn.png" width="44" height="44"></a>
  <a href="###" class="fdOTel f_l"></a>
  <a href="###" class="fdOOn f_r"></a>
</div>

// JavaScript Document
document.writeln("<style type=\"text/css\">");
document.writeln(".fdBonTel{ width:100%; height:53px; position:fixed; background:#0052ae; text-align:center; left:0; bottom:0; z-index:999; }");
document.writeln(".fdOnline{ background:url(index/images/online.png) no-repeat; width:255px; height:181px; position:fixed; left:50%; margin-left:-128px; :40%; z-index:999; border-radius: 15px; box-shadow: 0 0 20px rgba(10, 2, 4, 0.75);}");
document.writeln(".fdOnline .fdOClose{ width:44px; height:44px; display:block; margin-:-17px; margin-right:-6px;}");
document.writeln(".fdOnline .fdOTel{ width:127px; height:58px; display:block; margin-:123px;}");
document.writeln(".fdOnline .fdOOn{ width:128px; height:58px; display:block; margin-:96px;}");
document.writeln("</style>");
document.writeln("<div class=\"fdBonTel\">");
document.writeln(" <img src=\"index/images/fdTel.gif\" usemap=\"#Maps\">");
document.writeln(" <map name=\"Maps\" id=\"Maps\">");
document.writeln("   <area shape=\"rect\" coords=\"2,2,79,52\" onClick=\"openZoosUrl();\">");
document.writeln("     <area shape=\"rect\" coords=\"77,2,166,52\" href=\"tel:0855-8253310\">");
document.writeln("     <area shape=\"rect\" coords=\"166,4,242,51\" onClick=\"openZoosUrl();\">");
document.writeln("   <area shape=\"rect\" coords=\"248,5,318,53\" onClick=\"openZoosUrl();\">");
document.writeln(" </map>");
document.writeln("</div>");
document.writeln("<div class=\"fdOnline\" id=\"fdOnline\">");
document.writeln(" <a href=\"###\" class=\"fdOClose f_r\" onclick=\"closeOnline();\"><img src=\"index/images/closeBtn.png\" width=\"44\" height=\"44\"></a>");
document.writeln(" <a href=\"###\" class=\"fdOTel f_l\"></a>");
document.writeln("  <a href=\"###\" class=\"fdOOn f_r\"></a>");
document.writeln("</div>");
function showOnline() {
  if (document.getElementById("fdOnline")) {
    if (document.getElementById("fdOnline").style.display == "none") {
      document.getElementById("fdOnline").style.display = "block";
    }
  }
}
function closeOnline() {
  document.getElementById("fdOnline").style.display = "none";
  setInterval(chkSWT, 30000);
};
$(function(){
  setInterval(showOnline, 30000);
});