// Sniffer based on http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html
var uagent    = navigator.userAgent.toLowerCase();
var is_safari = ( (uagent.indexOf('safari') != -1) || (navigator.vendor == "Apple Computer, Inc.") );
var is_opera  = (uagent.indexOf('opera') != -1);
var is_webtv  = (uagent.indexOf('webtv') != -1);
var is_ie     = ( (uagent.indexOf('msie') != -1) && (!is_opera) && (!is_safari) && (!is_webtv) );
var is_ie4    = ( (is_ie) && (uagent.indexOf("msie 4.") != -1) );
var is_moz    = ( (navigator.product == 'Gecko')  && (!is_opera) && (!is_webtv) && (!is_safari) );
var is_ns     = ( (uagent.indexOf('compatible') == -1) && (uagent.indexOf('mozilla') != -1) && (!is_opera) && (!is_webtv) && (!is_safari) );
var is_ns4    = ( (is_ns) && (parseInt(navigator.appVersion) == 4) );
var is_kon    = (uagent.indexOf('konqueror') != -1);
var is_win    =  ( (uagent.indexOf("win") != -1) || (uagent.indexOf("16bit") !=- 1) );
var is_mac    = ( (uagent.indexOf("mac") != -1) || (navigator.vendor == "Apple Computer, Inc.") );
var ua_vers   = parseInt(navigator.appVersion);

var is_regexp = (window.RegExp) ? true : false;

function fetch_object(idname)
{
	if (document.getElementById)
	{
		return document.getElementById(idname);
	}
	else if (document.all)
	{
	
		return document.all[idname];
	}
	else if (document.layers)
	{
		return document.layers[idname];
	}
	else
	{
		return null;
	}
}

function set_cookie(name, value, expires)
{
	document.cookie = name + '=' + escape(value) + '; path=/' + (typeof expires != 'undefined' ? '; expires=' + expires.toGMTString() : '');
}

function delete_cookie(name)
{
	document.cookie = name + '=' + '; expires=Thu, 01-Jan-70 00:00:01 GMT' +  '; path=/';
}

function fetch_cookie(name)
{
	cookie_name = name + '=';
	cookie_length = document.cookie.length;
	cookie_begin = 0;
	while (cookie_begin < cookie_length)
	{
		value_begin = cookie_begin + cookie_name.length;
		if (document.cookie.substring(cookie_begin, value_begin) == cookie_name)
		{
			var value_end = document.cookie.indexOf (';', value_begin);
			if (value_end == -1)
			{
				value_end = cookie_length;
			}
			return unescape(document.cookie.substring(value_begin, value_end));
		}
		cookie_begin = document.cookie.indexOf(' ', cookie_begin) + 1;
		if (cookie_begin == 0)
		{
			break;
		}
	}
	return null;
}

/*-------------------------------------------------------------------------*/
// pop up window
/*-------------------------------------------------------------------------*/
 
function popupwin(url, width, height, scroll, pos, winname)
{
	if(pos=="center")
	{
		LeftPosition=(screen.width)?(screen.width-width)/2:100;
		TopPosition=(screen.height)?(screen.height-height)/2:100;
	}
	else if((pos!="center" && pos!="random") || pos==null)
	{
		LeftPosition=100;
		TopPosition=100;
	}
	
	if(scroll == null)
	{
		scroll = "no";	
	}
	else
	{
		scroll = scroll;
	}
	
 
	var	name = (winname != null) ? winname : "miniwin";


	argvs='width='+width+',height='+height+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=yes';
	var win = window.open(url, name, argvs);
}

function textCounter(field, countfield, maxlimit) {
	if (field.value.length > maxlimit){
		field.value = field.value.substring(0, maxlimit);
	}
	else
	{
	   	document.getElementById('cCharLeft').innerHTML = field.value.length;
   }
}

function checkMaxchar(field, maxlength) 
{
	if (field.value.length > maxlength) 
	{
		alert("Bạn chỉ được nhập tối đa là " + maxlength + " ký tự trong phần này!");
		return false;
	}
	return true;
}

function radio_list(fieldvalue,fieldname)
{
	var field_count = fieldname.length;	
	for (i=0;i<field_count;i++)
	{
		if (fieldvalue==fieldname[i].value)
		{
			fieldname[i].checked=true;
			break;
		}
	}
}

function checkbox_list(fieldvalue,fieldname)
{
	if (fieldvalue==fieldname.value){
		fieldname.checked=true;
	}
}

function select_list(fieldvalue,fieldname)
{
	var option_count = fieldname.options.length;	
	for ( i = 0; i < option_count; i++ )
	{
		if (fieldvalue == fieldname.options[i].value){
			fieldname.options[i].selected=true;
			break;
		}
	}
}

function expand_textbox(boxid, boxid2, handle)
{
	var box = fetch_object(boxid);
	var box2 = fetch_object(boxid2);
	var bodyElement = fetch_object("bodyElement");
	var memfoot = fetch_object("memberfootbar");
	var typemode = fetch_object("typemode");
	var dropdownbox = fetch_object("dropdownbox");
	var dropdownbox2 = fetch_object("dropdownbox2");
	var hidedropbox	 = fetch_object("hidedropbox");
	var getHeight = document.body.clientHeight;
	var getWidth = document.body.offsetWidth;	
	
	if(is_moz)
	{
		var pageHeight = getHeight;
		var pageWidth = getWidth;
	}
	else
	{
		var pageHeight = getHeight - 25;
		var pageWidth = getWidth;
	}

	if(handle == "full")
	{
		box.style.position = "absolute";
		box.style.background = "#ffffff";
		box.style.top = document.body.scrollTop;
		box.style.left = "0px";
		box.style.width = pageWidth+ 'px';
		box.style.zIndex = 1;
		box2.style.height = pageHeight + 'px';	
		box2.style.width = pageWidth + 'px';	
		box2.style.fontSize = '12px';
		box2.style.zIndex = 1;
		//box2.focus();
		(memfoot) ? memfoot.style.display = 'none' : '';
		(typemode) ? typemode.style.display = 'none' : '';
		(dropdownbox) ? dropdownbox.style.display = 'none' : '';
		(dropdownbox2) ? dropdownbox2.style.display = 'none' : '';
		(hidedropbox) ? hidedropbox.style.display = 'none' : '';
		document.body.style.overflow = 'hidden';
		
	}
	else
	{
		box.style.position = '';
		box.style.background = '';		
		box.style.top = '';
		box.style.left = '';
		box.style.width = '100%';
		box2.style.height = '';
		box2.style.width = '';		
		box2.style.fontSize = '11px';
		//box2.focus();
		(memfoot) ? memfoot.style.display = '' : '';
		(typemode) ? typemode.style.display = '' : '';
		(dropdownbox) ? dropdownbox.style.display = '' : '';
		(dropdownbox2) ? dropdownbox2.style.display = '' : '';
		(hidedropbox) ? hidedropbox.style.display = '' : '';		
		document.body.style.overflow = '';
	}	
	return false;
}

function toggle_collapse(objid)
{
	if (!is_regexp)
	{
		return false;
	}

	obj = fetch_object('collapseobj_' + objid);
	img = fetch_object('collapseimg_' + objid);
	cel = fetch_object('collapsecel_' + objid);

	if (!obj)
	{
		if (img)
		{
			img.style.display = 'none';
		}
		return false;
	}

	if (obj.style.display == 'none')
	{
		obj.style.display = '';
		save_collapsed(objid, false);
		if (img)
		{
			img_re = new RegExp("_collapsed\\.gif$");
			img.src = img.src.replace(img_re, '.gif');
		}
		if (cel)
		{
			cel_re = new RegExp("^(tgroup|thead|tcat)(_collapsed)$");
			cel.className = cel.className.replace(cel_re, '$1');
		}
	}
	else
	{
		obj.style.display = 'none';
		save_collapsed(objid, true);
		if (img)
		{
			img_re = new RegExp("\\.gif$");
			img.src = img.src.replace(img_re, '_collapsed.gif');
		}
		if (cel)
		{
			cel_re = new RegExp("^(tgroup|thead|tcat)$");
			cel.className = cel.className.replace(cel_re, '$1_collapsed');
		}
	}
	return false;
}

function save_collapsed(objid, addcollapsed)
{
	var collapsed = fetch_cookie('odgat_collapse');
	var tmp = new Array();

	if (collapsed != null)
	{
		collapsed = collapsed.split('\n');

		for (var i in collapsed)
		{
			if (collapsed[i] != objid && collapsed[i] != '')
			{
				tmp[tmp.length] = collapsed[i];
			}
		}
	}

	if (addcollapsed)
	{
		tmp[tmp.length] = objid;
	}

	expires = new Date();
	expires.setTime(expires.getTime() + (1000 * 86400 * 365));
	set_cookie('odgat_collapse', tmp.join('\n'), expires);
}

function XMLEncode(str)
{
     str = trim(str);
     str = str.replace("&","&amp;");
     str = str.replace("<","&lt;");
     str = str.replace(">","&gt;");
     str = str.replace("'","&apos;");
     str = str.replace("\"","&quot;");
     return str;
}

function XMLDecode(str)
{
     str = str.replace("&amp;","&");
     str = str.replace("&lt;","<");
     str = str.replace("&gt;",">");
     str = str.replace("&apos;","'");
     str = str.replace("&quot;","\"");
     return str;
}

function checknumber(x)
{
	var anum=/(^\d+$)|(^\d+\.\d+$)/;
	if (anum.test(x))
	{
		testresult=true;
	}
	else
	{
		testresult=false;
	}
	return (testresult)
}

function checkEmail(field) 
{ 
	var str = field.value; 
	var pattern = /^([a-zA-Z0-9])+([\.a-zA-Z0-9_-])*@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-]+)+/; 
	var flag = pattern.test(str); 
 	if(!flag) 
 	{ 
 	 	return false; 
 	} 
 return true; 
}

function check_url(field)
{
	var is_protocol_ok=field.value.indexOf('http://');
	if (is_protocol_ok==-1)
 	{ 
		return false;
 	}
	return true;
}

function addbookmark()
{
	if(window.sidebar)
	{
		window.sidebar.addPanel(document.title,document.location.href,"");
	}
	else if( document.all )
	{
		window.external.AddFavorite(document.location.href,document.title);
	}
	else
	{
		alert("Xin liỗ! Trình duyệt của bạn không hỗ trợ Bookmark!");
	}
}

function sethomepage(url)
{
	if(is_ie || is_ie4 || is_win)
	{
		document.body.style.behavior='url(#default#homepage)';
		document.body.setHomePage(url);
	}
	else
	{
		alert("Xin liỗ! Trình duyệt của bạn không hỗ trợ setHomepage!");
	}
}

function positionit()
{
	var cross_obj= fetch_object("div_fullimage");
	var ieHoffset_extra= document.all ? 15 : 0;
	var iecompattest = (document.compatMode && document.compatMode!="BackCompat") ? document.documentElement : document.body;
	var dsocleft = document.all ? iecompattest.scrollLeft : pageXOffset;
	var dsoctop = document.all ? iecompattest.scrollTop : pageYOffset;
	var window_width = is_ie ? iecompattest.clientWidth+ieHoffset_extra : window.innerWidth+ieHoffset_extra;
	var window_height= is_ie ? iecompattest.clientHeight : window.innerHeight;

	if (document.all||document.getElementById)
	{
		cross_obj.style.left=0+"px"
		cross_obj.style.top=dsoctop+parseInt(window_height)-parseInt(window_height)+"px"
	}
	else if (document.layers){
		cross_obj.left=0
		cross_obj.top=dsoctop+window_height-window_height
	}
}