함수관련 질문좀 드릴게요 ~!

<style>	/* jssor slider bullet navigator skin 05 css */	/*	.jssorb05 div           (normal)	.jssorb05 div:hover     (normal mouseover)	.jssorb05 .av           (active)	.jssorb05 .av:hover     (active mouseover)	.jssorb05 .dn           (mousedown)	*/	.jssorb05 {		position: absolute;	}	.jssorb05 div, .jssorb05 div:hover, .jssorb05 .av {		position: absolute;		/* size of bullet elment */		width: 16px;		height: 16px;		background: url('<?php echo $board_skin_url; ?>/img/b05.png') no-repeat;		overflow: hidden;		cursor: pointer;	}	.jssorb05 div { background-position: -7px -7px; }	.jssorb05 div:hover, .jssorb05 .av:hover { background-position: -37px -7px; }	.jssorb05 .av { background-position: -67px -7px; }	.jssorb05 .dn, .jssorb05 .dn:hover { background-position: -97px -7px; }		/* jssor slider arrow navigator skin 22 css */	/*	.jssora22l                  (normal)	.jssora22r                  (normal)	.jssora22l:hover            (normal mouseover)	.jssora22r:hover            (normal mouseover)	.jssora22l.jssora22ldn      (mousedown)	.jssora22r.jssora22rdn      (mousedown)	*/	.jssora22l, .jssora22r {		display: block;		position: absolute;		/* size of arrow element */		width: 40px;		height: 58px;		cursor: pointer;		background: url('<?php echo $board_skin_url; ?>/img/a22.png') center center no-repeat;		overflow: hidden;	}	.jssora22l { background-position: -10px -31px; }	.jssora22r { background-position: -70px -31px; }	.jssora22l:hover { background-position: -130px -31px; }	.jssora22r:hover { background-position: -190px -31px; }	.jssora22l.jssora22ldn { background-position: -250px -31px; }	.jssora22r.jssora22rdn { background-position: -310px -31px; }</style> <script src="<?php echo G5_JS_URL; ?>/viewimageresize.js"></script><script src="<?php echo $board_skin_url; ?>/js/jssor.slider-21.1.6.mini.js"></script> <script type="text/javascript"><!--jssor_1_slider_init = function() {		var jssor_1_SlideoTransitions = [];		var jssor_1_options = {	  $AutoPlay: true,	  $SlideDuration: 800,	  $SlideEasing: $Jease$.$OutQuint,	  $CaptionSliderOptions: {		$Class: $JssorCaptionSlideo$,		$Transitions: jssor_1_SlideoTransitions	  },	  $ArrowNavigatorOptions: {		$Class: $JssorArrowNavigator$	  },	  $BulletNavigatorOptions: {		$Class: $JssorBulletNavigator$	  }	};		var jssor_1_slider = new $JssorSlider$("jssor_1", jssor_1_options);		//responsive code begin	//you can remove responsive code if you don't want the slider scales while window resizing	function ScaleSlider() {		var refSize = jssor_1_slider.$Elmt.parentNode.clientWidth;		if (refSize) {			refSize = Math.min(refSize, 1920);			jssor_1_slider.$ScaleWidth(refSize);		}		else {			window.setTimeout(ScaleSlider, 30);		}	}	ScaleSlider();	$Jssor$.$AddEvent(window, "load", ScaleSlider);	$Jssor$.$AddEvent(window, "resize", ScaleSlider);	$Jssor$.$AddEvent(window, "orientationchange", ScaleSlider);	//responsive code end}; //--></script>