// QueryString 
// Call function by x = querystring("variable") returns variable=x 
function QueryString(key)  { 
	var value = null; 
	for (var i=0;i<QueryString.keys.length;i++) { 
		if (QueryString.keys[i]==key) { 
			value = QueryString.values[i]; 
			break; 
		} 
	} 
	return value; 
} 
QueryString.keys = new Array(); 
QueryString.values = new Array(); 

function QueryString_parse() { 
	var query = window.location.search.substring(1); ; 
	//var query = location.search.substring(1, location.search.length);

	//alert(query);
	var pairs = query.split("&"); 
	var write_expiry_cookie = false;
	var style_uid = '';
	var from_search = '';
	for (var i=0;i<pairs.length;i++) { 
		var pos = pairs[i].indexOf('='); 
		if (pos >= 0) { 
			var argname = pairs[i].substring(0,pos); 
			var value = pairs[i].substring(pos+1); 
			QueryString.keys[QueryString.keys.length] = argname; 
			QueryString.values[QueryString.values.length] = value; 
			
			//alert(argname + ' ' + value);
			if (argname == 'fs' && value > 0){
				style_uid = value;		
			}			
		} 
	} 
	
	//alert('S UID: ' + style_uid);	
	//read cookie value and append new value
	if (style_uid > 0){
		//alert('S UID 2: ' + style_uid);
		var cookie_name = 'style_tracker';
		var cookies = document.cookie;
		//alert('S UID 3: ' + style_uid + ' ' + cookies.indexOf(cookie_name));
		if (cookies.indexOf(cookie_name) != -1){
			var orig_val = find_search_cookie(cookie_name);
			var newval = orig_val + '%3A2' + style_uid;
			//alert('HERE >> ' +  newval);
			Set_Cookie( cookie_name, newval,'60','/','','' );
		}
		else {
			//alert('S UID 5: ' + style_uid);
			Set_Cookie( cookie_name, style_uid,'60','/','','' );
		}
	}	
	//alert('S UID 6: ' + style_uid);
} 

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;
	}
	var expires_date = new Date( today.getTime() + (expires) );
	
	document.cookie = name + "=" +escape( value ) +
	( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) +
	( ( path ) ? ";path=" + path : "" ) +
	( ( domain ) ? ";domain=" + domain : "" ) +
	( ( secure ) ? ";secure" : "" );
}

function delete_cookie ( cookie_name ){
  var cookie_date = new Date ( );  // current date & time
  cookie_date.setTime ( cookie_date.getTime() - 1 );
  document.cookie = cookie_name += "=; expires=" + cookie_date.toGMTString();
}

function find_search_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;
	}
}

QueryString_parse();