<script> <BR>function getRootPath(){ <BR>var strFullPath=window.document.location.href; <BR>var strPath=window.document.location.pathname; <BR>var pos=strFullPath.indexOf(strPath); <BR>var prePath=strFullPath.substring(0,pos); <BR>var postPath=strPath.substring(0,strPath.substr(1).indexOf(‘/')+1); <BR>return(prePath+postPath); <BR>} <BR>var webpath=getRootPath(); //webpath就是目录路径变量 <BR></script>