window.onload=function(){
??? var hpn= document.getElementById("hpn");
??? var strHref=document.getElementById("strHref");
??? function showdiv(){
??????? hpn.style.display = "block";
??????? strHref.href = "javascript:hidediv();";
??????? strHref.innerHTML = "收起-";
??? }
??? function hidediv(){
??????? hpn.style.display = "none";
??????? strHref.href = "javascript:showdiv();";
??????? strHref.innerHTML = "展開+";
??? }
}