var menushow;
function showmenu(menu){ 
    if(menushow) 
    menushow.style.visibility="hidden" 
    menushow=menu 
    menu.style.visibility="visible" 
} 
function hidemenu(menu){ 
    menu.style.visibility="hidden" 
} 
function hideshow() 
{ 
    if(menushow) 
    menushow.style.visibility="hidden" 
}
function CheckLogin()
{
	if(document.UserLogin.UserName.value=="")
	{
		alert("请输入用户名！");
		document.UserLogin.UserName.focus();
		return false;
	}
	if(document.UserLogin.Password.value == "")
	{
		alert("请输入密码！");
		document.UserLogin.Password.focus();
		return false;
	}
	if (document.UserLogin.chknum.value=="")
	{
		alert ("请输入您的验证码！");
      		document.UserLogin.chknum.focus();
      		return(false);
   	}
}

function CheckSearch()
{
	if(document.Search.KeyWord.value=="")
	{
		alert("请输入“关键字”！");
		document.Search.KeyWord.focus();
		return(false);
	}
}

//双击鼠标滚动屏幕的代码
var currentpos,timer;
function initialize()
{
timer=setInterval ("scrollwindow ()",50);
}
function sc()
{
clearInterval(timer);
}
function scrollwindow()
{
currentpos=document.body.scrollTop;
window.scroll(0,++currentpos);
if (currentpos !=document.body.scrollTop)
sc();
}
document.onmousedown=sc;
document.ondblclick=initialize;

function fontsize(size){
document.getElementById('content').style.fontSize=size+'px';
}

//不需要CTRL
function bbimg(o){
var zoom = parseInt(o.style.zoom, 10) || 100;
zoom -= event.wheelDelta / 12;
if(zoom > 0) {
o.style.zoom = zoom + '%';
}
return false;

}

/*--需要CTRL
function bbimg1(o){
if(event.ctrlKey) {
var zoom = parseInt(o.style.zoom, 10) || 100;
zoom -= event.wheelDelta / 12;
if(zoom > 0) {
o.style.zoom = zoom + '%';
}
return false;
} else {
return true;
}
}
--*/

function gocontent(){
	document.all("content").value=IframeID.document.body.innerHTML;
}

function AddItem(strFileName){
  document.myform.IncludePic.checked=true;
  document.myform.IndexPicUrl.value=strFileName;
  document.myform.DefaultPicList.options[document.myform.DefaultPicList.length]=new Option(strFileName,strFileName);
  document.myform.DefaultPicList.selectedIndex+=1;
  if(document.myform.UploadFiles.value==''){
	document.myform.UploadFiles.value=strFileName;
  }
  else{
    document.myform.UploadFiles.value=document.myform.UploadFiles.value+"|"+strFileName;
  }
}