//获取参数
function getParam(srcStr,paramName) {
 var pos, paramStr, paramArr, paramValue, tempStr;
 pos = srcStr.indexOf("?");
 paramStr = srcStr.substring(pos+1);
 paramArr = paramStr.split("&");
 parameValue = "";
 tempStr = "";
 for (var i=0; i<paramArr.length; i++) {
  tempStr = paramArr[i];
  pos = tempStr.indexOf("=");
  if(tempStr.substring(0,pos) == paramName) {
   paramValue = tempStr.substring(pos+1);
   return paramValue;
  }
 }
 return null;
}
//建立一个div
function createDiv() {
 document.write("<div id=\"playerDiv\"></div>");
 var divObj = document.getElementById("playerDiv");
 return divObj;
}
//建立iframe
function createIframe() {
 var playerObj = document.getElementById("player");
 var playerStr = playerObj.src;
 var playerHeight = getParam(playerStr,"height");
 var playerWidth = getParam(playerStr,"width");
 var playerIframe = document.createElement("iframe");
 var divObj = createDiv();
 playerIframe.name = "playerfrm";
 playerIframe.id = "playerfrm";
 playerIframe.width = playerWidth;
 playerIframe.height = playerHeight;
 playerIframe.marginWidth = "0";
 playerIframe.marginHeight = "0";
 playerIframe.border = "0";
 playerIframe.frameBorder = "0";
 playerIframe.src = "player/player.html";
 playerIframe.scrolling = "no";
 divObj.appendChild(playerIframe);
}

调用方式：

<script type="text/javascript" language="javascript" src="player/player.js?height=339&width=422&xPath=12345/config/video.xml" id="player">