function Goback()
{
    try
    {
        if(myArray.length>1){
            myArray.pop();
            ShowHtmlFileBack(myArray[myArray.length-1]);
        }
    }
    catch(err)
    {
    }
}

function ShowHtml(htmlfolder)
{
    myArray.push(htmlfolder + "/" + "ContentVn.htm");
    AjaxRequest.get({
		            'url':htmlfolder + "/" + "ContentVn.htm"
		            ,'onSuccess':function(req){document.getElementById("content").innerHTML = req.responseText;}
		            ,'onError':function(req){document.getElementById("content").innerHTML = req.statusText;}
			       })
}
function ShowHtmlFileBack(htmlfile)
{
    AjaxRequest.get({
			        'url':htmlfile
			        ,'onSuccess':function(req){document.getElementById("content").innerHTML = req.responseText;}
			        ,'onError':function(req){document.getElementById("content").innerHTML = req.statusText;}
				    })
}

function ShowHtmlFile(htmlfile)
{
    myArray.push(htmlfile);
    AjaxRequest.get({
				        'url':htmlfile
				        ,'onSuccess':function(req){document.getElementById("content").innerHTML = req.responseText;}
				        ,'onError':function(req){document.getElementById("content").innerHTML = req.statusText;}
					})
}