function zhan(na){
	if(na==1)
  list1.style.display='';
  if(na==2)
  list2.style.display='';
  if(na==3)
  list3.style.display='';
  if(na==4)
  list4.style.display='';
  if(na==5)
  list5.style.display='';
}
function suo(na){
	if(na==1)
  list1.style.display='none';
  if(na==2)
  list2.style.display='none';
  if(na==3)
  list3.style.display='none';
  if(na==4)
  list4.style.display='none';
  if(na==5)
  list5.style.display='none';
}
function openthis(obj,obj2){

	if (obj.className=='main_open'){	
		obj.className='main1';
		obj2.innerHTML="and more >";
	}else{
	  obj.className='main_open';
	  obj2.innerHTML="< less<br>";
	}
}
function ob()
{
		  if(document.getElementById("Body").value=="add your email address here"){
			document.getElementById("Body").value="";
			}
}
function oc()
{
		  if(document.getElementById("Body").value==""){
			document.getElementById("Body").value="add your email address here";
			}
}