function getCookie(name)
{
	if (document.cookie.length > 0)
	  {
	    c_start=document.cookie.indexOf(name + "=");
	    if (c_start != -1)
	    {
	        c_start=c_start + name.length+1;
	        c_end=document.cookie.indexOf(";",c_start);
	        if (c_end == -1)
	        {
	            c_end = document.cookie.length;
	        }
	        return unescape(document.cookie.substring(c_start,c_end));
	    } 
	  }
	return "";
}

function setCookie(name, value, expiredays)
{
    var exdate = new Date();
    exdate.setDate(exdate.getDate() + expiredays);
    document.cookie = name + "=" + escape(value) + ((expiredays==null) ? "" : ";expires=" + exdate.toGMTString());
}

function loadVietkey() 
{	
    var vietKeyOnOff = "vietKeyOnOff";
	if (getCookie(vietKeyOnOff) == 0) 
	{
		setTypingMode(0);
		document.getElementById('btnVietkey').src ='Res/E.png';
	} 
	else 
	{	
		setTypingMode(4);
		document.getElementById('btnVietkey').src ='Res/V.png';
	}      
	return true;
}

function btnVietkey_OnClick() 
{	
    var vietKeyOnOff = "vietKeyOnOff";
	if (getCookie(vietKeyOnOff) == 1) 
	{
		setTypingMode(0);
	    setCookie(vietKeyOnOff,0,365);
		document.getElementById('btnVietkey').src ='Res/E.png';
	} 
	else 
	{	
		setTypingMode(4);
		setCookie(vietKeyOnOff,1,365);
		document.getElementById('btnVietkey').src ='Res/V.png';
	}      
	return true;
}

function showKeyboard()
{
    var tbxFindWhat = document.getElementById('<% =this.tbxFindWhat.ClientID %>')
    VKI_show(tbxFindWhat);
}