(function($) {
 $.fn.blinker = function(_dur, _imagePath, kill) {
	//console.log('fn0:_dur=='+_dur)
	var _this = this;
	if(kill==true) {
		clearInterval($(this).data('columnNavBlinker_intervalId'));
		$(this).css('background-image','url("'+_imagePath+'")');
		//traceOut("columnNavBlinkerIntervalHandler:centering");
		$(_this).css('background-position', 'center');
	} else {
		$(this).data('columnNavBlinker_dur',_dur);
		$(this).data('columnNavBlinker_imagePath',_imagePath);
		$(this).css('background-image','url("'+_imagePath+'")');
		$(this).css('background-position','center center');
		$(this).css('background-repeat','no-repeat');
		$(this).data('columnNavBlinker_intervalId',setInterval(columnNavBlinkerIntervalHandler, _dur));

		function columnNavBlinkerIntervalHandler() {
			//traceOut("columnNavBlinkerIntervalHandler:position is "+$(_this).css('background-position'));
			if($(_this).css('background-position') == '1000px 1000px') {
				//traceOut("columnNavBlinkerIntervalHandler:centering");
				$(_this).css('background-position', 'center');
			} else {
				//traceOut("columnNavBlinkerIntervalHandler:100ing");
				$(_this).css('background-position','1000px 1000px');
			}
		}
	}
	
	
}})(jQuery);