/**
 * If the web browser is IE6 or below, display a close-able little notice bar 
 * on the top of the web page, to notify user to upgrade to a better browser.
 *
 * Usage: Simply include this file in the pages that you want the notice bar appear.
 * 
 * Hesky Ji<hji003@gmail.com>
 * Maikel Daloo<maikel.daloo@gmail.com> 
 *
 * public-beta-0.1
 * 11/08/2008
 */

var ua = navigator.userAgent.toLowerCase();
var client = {
    isStrict:   document.compatMode == 'CSS1Compat',
    isOpera:    ua.indexOf('opera') > -1,
	isIE5:      ua.indexOf('msie 5.5') > -1 || ua.indexOf('msie 5') > -1,
    isIE6:      ua.indexOf('msie 6') > -1,
    isSafari:   /webkit|khtml/.test(ua),
    isWindows:  ua.indexOf('windows') != -1 || ua.indexOf('win32') != -1,
    isMac:      ua.indexOf('macintosh') != -1 || ua.indexOf('mac os x') != -1,
    isLinux:    ua.indexOf('linux') != -1
};
client.isBorderBox = client.isIE && !client.isStrict;
client.isSafari3 = client.isSafari && !!(document.evaluate);
client.isGecko = ua.indexOf('gecko') != -1 && !client.isSafari;

/**
 * You're not sill using IE6 are you?
 *
 * @var         Boolean
 * @private
 */
var ltIE7 = client.isIE6 || client.isIE5;

if(ltIE7){
  addLoadEvent(display_warning);
}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      func();
      if (oldonload) {
        oldonload();
      }
    }
  }
}
  
function display_warning(){
  // Check if there is a cookie set for this page:
  if(Get_Cookie('closed') == 1){
  	return;
  }
  // end cookie check

  var oldHtml = document.body.innerHTML;
  var css_a = 'text-decoration: underline; color: black; font-weight:bold;';
  var warningHtml = "";
  warningHtml += '<style>';
  warningHtml += 'html, body { ';
  warningHtml += 'overflow-y: hidden!important; ';
  warningHtml += 'height: 100%;';
  warningHtml += 'padding: 0px;';
  warningHtml += 'margin: 0px; }';
  warningHtml += '</style>';

  warningHtml += "<div id=\"bar\" style='position: absolute; top:0px; bottom:auto; left:0px; right:0px; margin: 0px; height:17px; padding: 3px; font-family: Verdana, Helvetica, Geneva, Arial, sans-serif; font-size:10px; background-color:#FFFFE1; color:black; border-top: 1px solid #FFFFE1; border-bottom: 1px solid #cccccc; padding-left:15px; margin-left: -15px;'>";
  warningHtml += "<div style='float:right; text-align:right; width:auto; margin: auto 5px;'>";
  warningHtml += "<a style='text-decoration: none; color: black;' href='#' onclick='Close()'>[ close once ]</a>";
  warningHtml += "</div>";
  
  warningHtml += "<div style='float:right; text-align:right; width:auto; margin: auto 5px;'>";
  warningHtml += "<a style='text-decoration: none; color: black;' href='#' onclick='Close_Cookie()'>[ close forever ]</a>";
  warningHtml += "</div>";
  
  warningHtml += "<div style='text-align:left; margin:auto 10px;'>";
  warningHtml += "You are using an out-of-date version of Internet Explorer, <a style='"+css_a+"' target='_blank' href='http://www.microsoft.com/windows/downloads/ie/getitnow.mspx'>click here</a> to download the latest version! Better yet, use <a style='"+css_a+"' target='_blank' href='http://www.mozilla.com/firefox/'>Firefox</a>.";
  warningHtml += "</div>";
  warningHtml += "</div>";

  var spacerHTML = "";
  spacerHTML += "<div id=\"wrapper\" style='height:25px; line-height:25px; font-size:10px; display:block; margin:0px; padding:0px;'>";
  spacerHTML += "</div>";
  var oldHTMLWrap = "";
  oldHTMLWrap += "<div style='width:100%; margin:0px; padding:0px; height:100%; overflow-y: scroll; position:relative;'>";
  oldHTMLWrap += spacerHTML;
  oldHTMLWrap += oldHtml;
  oldHTMLWrap += "</div>";
  document.body.innerHTML = oldHTMLWrap + warningHtml;
}

function Close() {
  document.getElementById('bar').style.display="none";
  document.getElementById('wrapper').style.display="none";
  return false;
}

function Close_Cookie() {
//Set_Cookie( name, value, expires, path, domain, secure )
  Set_Cookie( "closed", '1', '1', '/', '', '' );
  //alert(Get_Cookie("closed"));
  document.getElementById('bar').style.display="none";
  document.getElementById('wrapper').style.display="none";
  return false;
}

// To use, simple do: Get_Cookie('cookie_name'); 
// replace cookie_name with the real cookie name, '' are required
function Get_Cookie( check_name ) {
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f
	
	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );
		
		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');
	
		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
			{
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found ) 
	{
		return null;
	}
}

/*
only the first 2 parameters are required, the cookie name, the cookie
value. Cookie time is in milliseconds, so the below expires will make the 
number you pass in the Set_Cookie function call the number of days the cookie
lasts, if you want it to be hours or minutes, just get rid of 24 and 60.

Generally you don't need to worry about domain, path or secure for most applications
so unless you need that, leave those parameters blank in the function call.
*/
function Set_Cookie( name, value, expires, path, domain, secure ) {
	// set time, it's in milliseconds
	var today = new Date();
	today.setTime( today.getTime() );
	// if the expires variable is set, make the correct expires time, the
	// current script below will set it for x number of days, to make it
	// for hours, delete * 24, for minutes, delete * 60 * 24
	if ( expires )
	{
		expires = expires * 1000 * 60 * 60 * 24;
	}
	//alert( 'today ' + today.toGMTString() );// this is for testing purpose only
	var expires_date = new Date( today.getTime() + (expires) );
	//alert('expires ' + expires_date.toGMTString());// this is for testing purposes only

	document.cookie = name + "=" +escape( value ) +
		( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + //expires.toGMTString()
		( ( path ) ? ";path=" + path : "" ) + 
		( ( domain ) ? ";domain=" + domain : "" ) +
		( ( secure ) ? ";secure" : "" );
}

// this deletes the cookie when called
function Delete_Cookie( name, path, domain ) {
	if ( Get_Cookie( name ) ) document.cookie = name + "=" +
			( ( path ) ? ";path=" + path : "") +
			( ( domain ) ? ";domain=" + domain : "" ) +
			";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}