// *************************************************************
//  GLOBAL VARIABLES.
// *************************************************************
function getUrlParameter(par) 
{
  var value='';
  var UrlParameter = window.location.search;
  
  if(UrlParameter != ""){
    var i = UrlParameter.indexOf(par+"=");
    if(i >= 0){
      i = i+par.length+1;
      var k = UrlParameter.indexOf("&", i);
      if(k < 0){
        k = UrlParameter.length;
      }
      value = UrlParameter.substring(i, k);
    }
  }
  return unescape(value);
} 

// Cookie
   function getCookie( name ) {
	var start = document.cookie.indexOf( name + "=" );
	var len = start + name.length + 1;
	if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
		return null;
	}
	if ( start == -1 ) return null;
	var end = document.cookie.indexOf( ';', len );
	if ( end == -1 ) end = document.cookie.length;
	return unescape( document.cookie.substring( len, end ) );
}

function setCookie( name, value, expires, path, domain, secure ) {
	var today = new Date();
	today.setTime( today.getTime() );
	if ( expires ) {
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name+'='+escape( value ) +
		( ( expires ) ? ';expires='+expires_date.toGMTString() : '' ) + //expires.toGMTString()
		( ( path ) ? ';path=' + path : '' ) +
		( ( domain ) ? ';domain=' + domain : '' ) +
		( ( secure ) ? ';secure' : '' );
}

function deleteCookie( name, path, domain ) {
	if ( getCookie( name ) ) document.cookie = name + '=' +
			( ( path ) ? ';path=' + path : '') +
			( ( domain ) ? ';domain=' + domain : '' ) +
			';expires=Thu, 01-Jan-1970 00:00:01 GMT';
}

// language for stylesheet css menu
var lgsrc = "";
if( getCookie('language') == "en" ){
		lgsrc = "en";
}

// Files and directory structures
var cssDir = "includes/css/";
var winNSCSS = "global_pc_mozilla" + lgsrc + ".css";
var winIECSS = "menu" + lgsrc + ".css";
var macCSS = "global_mac" + lgsrc + ".css";

// *************************************************************
//  CLIENT_SIDE SNIFFER CODE
// *************************************************************
// convert all characters to lowercase to simplify testing 
var agt=navigator.userAgent.toLowerCase(); 

// *** BROWSER VERSION *** 
// Note: On IE5, these return 4, so use is_ie5up to detect IE5. 
var is_major = parseInt(navigator.appVersion); 
var is_minor = parseFloat(navigator.appVersion); 

// *** BROWSER TYPE *** 
var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1) 
            && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1) 
            && (agt.indexOf('webtv')==-1));
var is_nav4up = (is_nav && (is_major >= 4));  
var is_nav6up = (is_nav && (is_major > 6));
var is_ie   = (agt.indexOf("msie") != -1); 
var is_ie3  = (is_ie && (is_major < 4)); 
var is_ie4  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")==-1) );
var is_ie5  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );  
var is_ie5up  = (is_ie  && !is_ie3 && !is_ie4);  

// *** PLATFORM ***
var is_win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
var is_mac    = (agt.indexOf("mac")!=-1);


// *********************************************************************
//  STYLESHEET SELECTION
// *********************************************************************
ChooseStyleSheet();

// *********************************************************************
//  UTILITY FUNCTIONS
// *********************************************************************

// Function to choose the style sheet for use based on the platform
// and browser version
function ChooseStyleSheet() {
  var fileHead;
  if (arguments.length > 0) {
    fileHead = cssDir + arguments[0];
  } else {
    fileHead = cssDir;
  }
  var styles;
  if (is_win) {
	if ((is_nav) && (is_nav6up)){
      styles = fileHead + winIECSS;
    } else if (is_nav){
      styles = fileHead + winNSCSS;          
	} else {
	  styles = fileHead + winIECSS;
	}
  } else if ((is_mac) && (is_nav)) {
    styles = fileHead + macCSS;
  } else {
  	 styles = fileHead + winIECSS;
  }

  var link = "<link rel=\"stylesheet\" type=\"text/css\" href=\"" + styles + "\">";
  document.write(link);
  document.write("<link rel=\"stylesheet\" type=\"text/css\" href=\"" + cssDir + "print.css\" MEDIA=\"PRINT\">");
  return true;
}