var myimg = new Array();
myimg[0]="/images/arrow_left_click.gif";
myimg[1]="/images/arrow_right_click.gif";
var myimg_out = new Array();
myimg_out[0]="/images/arrow_left.gif";
myimg_out[1]="/images/arrow_right.gif";
var newimg = new Array();
function preloadImg() {
	for (var i=0;i<myimg.length;i++) {
		newimg[i] = new Image();
		newimg[i].src = myimg[i];
	}
}
function showImg(i) {
	var imgname;
	imgname = "galleryimg"+i;
	if (document.images) {
		document[imgname].src=myimg[i];
	}
}
function hideImg(i) {
	var imgname;
	imgname = "galleryimg"+i;
	if (document.images) {
		document[imgname].src=myimg_out[i];
	}
}