/* slide show on home page */

var curslide = 1;

function advanceSlide(){
	if (curslide<4) {
		curslide++;
	} else {
		curslide = 1;
	}
	$(".slidebutton").removeClass("sbactive")
	$('#slide' + curslide).addClass("sbactive");
	$(".slide").hide();
	$(".slide" + curslide).animate({opacity:'show'},'slow');
}

$(document).ready(function(){
	/* slide show on home page */
	$('.slide').css('visibility','visible');
	
	var slideTimer = self.setInterval('advanceSlide()', 5000);
	
	if ($(".slideshow")) {
		$(".slidebutton").click(function(){
			curslide = ($(".slidebutton").index(this) + 1);
			showSlide(curslide);
		});
		$(".prevslide").click(function(){ 
			if (curslide>1)
			{
				curslide = curslide - 1;
				showSlide(curslide);
			} else {
				curslide = 4;
				showSlide(curslide);
			}
		});
		$(".nextslide").click(function(){
			if (curslide<4)
			{
				curslide++;
				showSlide(curslide);
			} else {
				curslide = 1;
				showSlide(curslide);
			}
		});
	}
	
	function showSlide(newslide){
		self.clearInterval(slideTimer);
		curslide = newslide;
		$(".slidebutton").removeClass("sbactive")
		$('#slide' + curslide).addClass("sbactive");
		$(".slide").hide();
		$(".slide" + curslide).animate({opacity:'show'},'slow');
	}
});