Next image using Arrow Keys on ImageSlider?

Hi. I have a WOW Image Slider and would like to change the picture showed by using the arrow keys, and I would also like to change to the next picture by clicking on the current one, how to proceed this? The scripts I use for both the Arrow keys and Image slider can be seen below, what should I replace “alert” with so the script can understand that I want to change the picture to the next?

$(document).keydown(function(e){

var keyCode = e.keyCode || e.which;

if (keyCode == 38)
{
alert( “Up arrow key hit.” );
return false;
}

});

The ImageSlider Java Script:

jQuery.fn.wowSlider=function(C){var J=jQuery;var k=this;var h=k.get(0);C=J.extend({effect:function(){this.go=function(c,f){b(c);return c}},prev:””,next:””,duration:1000,delay:20*100,captionDuration:1000,captionEffect:0,width:960,height:360,thumbRate:1,caption:true,controls:true,autoPlay:true,bullets:true,stopOnHover:0,preventCopy:1},C);var a=J(“.ws_images”,k);var O=a.find(“ul”);function b(c){O.css({left:-c+”00%”})}J(“<div>”).css({width:”100%”,visibility:”hidden”,”font-size”:0,”line-height”:0}).append(a.find(“li:first img:first”).clone().css({width:”100%”})).prependTo(a);O.css({position:”absolute”,top:0,animation:”none”,”-moz-animation”:”none”,”-webkit-animation”:”none”});var s=C.images&&(new wowsliderPreloader(this,C));var i=a.find(“li”);var G=i.length;function B(c){return((c||0)+G)%G}var x=navigator.userAgent;if((/MSIE/.test(x)&&parseInt(/MSIEs+([d.]+)/.exec(x)[1],10)<8)||(/Safari/.test(x))){var X=Math.pow(10,Math.ceil(Math.LOG10E*Math.log(G)));O.css({width:X+”00%”});i.css({width:100/X+”%”})}else{O.css({width:G+”00%”,display:”table”});i.css({display:”table-cell”,”float”:”none”,width:”auto”})}var E=C.onBeforeStep||function(c){return c+1};C.startSlide=B(isNaN(C.startSlide)?E(-1,G):C.startSlide);b(C.startSlide);var L;if(C.preventCopy&&!/iPhone/.test(navigator.platform)){L=J(‘<div><a href=”#” style=”display:none;position:absolute;left:0;top:0;width:100%;height:100%”></a></div>’).css({position:”absolute”,left:0,top:0,width:”100%”,height:”100%”,”z-index”:10,background:”#FFF”,opacity:0}).appendTo(k).find(“A”).get(0)}var g=[];i.each(function(c){var ai=J(“>img:first,>a:first,>div:first”,this).get(0);var aj=J(“<div></div>”);for(var 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