function tweetMemeButton() {

// the function will do nothing if TweetMeme container doesn't exist.

if (document.getElementById("rt_btn")) {

// The code written ago.

var iframeCode = "";
iframeCode += "<iframe src=\"http://api.tweetmeme.com/button.js?url=" + escape(document.URL) + "&amp;style=compact&amp;source=dailyhrtips&amp;service=bit.ly\" scrolling=\"no\" frameborder=\"0\" width=\"51\" height=\"61\" >";

// Insert iframe into TweetMeme container

document.getElementById("rt_btn").innerHTML = iframeCode;
}
}
window.onload = tweetMemeButton;