var cx = 0;
function slide (dir) {
	if (dir == "right") {
		document.getElementById(sliderDivs[cx]).style.display = "none";
		if (cx != sliderDivs.length-1) {
			cx++;
		} else {
			cx = 0;	
		}
		document.getElementById(sliderDivs[cx]).style.display = "block";
	} else {
		document.getElementById(sliderDivs[cx]).style.display = "none";
		if (cx == 0) {
			cx = sliderDivs.length-1;
		} else {
			cx--;
		}
		document.getElementById(sliderDivs[cx]).style.display = "block";
	}
}