var scrollers = Array();
var intervals = Array();
var ccounters = Array();

function initPage() {

	if ($('slide_1')) {
		areaScrollerAddNavi('slide_1');
		areaScroller('slide_1');
	}
}

function areaScroller(divid) {
	scrollers[divid] = $(divid).getElementsByClassName(divid);
	ccounters[divid] = 0;
	intervals[divid] = setInterval("slideShow('" + divid + "')",4000);
}

function areaScrollerAddNavi(divid) {
	var e;
	var n;
	var c;
	var d;
	var count;
	var navi;

	if (e = $(divid).getElementsByClassName('inavi')) {
	
		n = e.length;
		count = 1;

		for (d = 0; d < n; d++) {
			navi = '';
			for (c = 1; c <= n; c++) {
				if (count == c) {
					navi += '<a href="javascript:showSlide('+ c +',\'' + divid + '\');" style="border: 0;" class=""><img src="images/bdot_on.png" border="0" width="7" height="7" alt="" id="dot" /></a>';
				} else {
					navi += '<a href="javascript:showSlide('+ c +',\'' + divid + '\');" style="border: 0;"><img src="images/bdot_off.png" border="0" width="7" height="7" alt="" id="dot" /></a>';
				}
			}
			e[d].update(navi);
			count++;
		}
	}
}

function showSlide(n,divid) {
	n--;
	if (scrollers[divid][n]) {
	
		var c;
		var d = scrollers[divid].length;
		
		for (c = 0; c < d; c++) {
			Element.hide(scrollers[divid][c]);
		}

		Element.show(scrollers[divid][n]);
		new Effect.Opacity(scrollers[divid][n],{duration: 0.5,transition: Effect.Transitions.linear,from: 0.0, to: 1.0});

		if (intervals[divid]) {
			clearInterval(intervals[divid]);
			//intervals[divid] = setInterval("slideShow('" + divid + "')",7000);
		}
	}
}

function switchElement(obj) {
	Element.hide(obj.element);
}

function slideShow(divid) {

	var e_1;
	var e_2;
	
	e_1 = scrollers[divid][ccounters[divid]];

	ccounters[divid]++;

	if (ccounters[divid] >= scrollers[divid].length) {
		ccounters[divid] = 0;
	}

	e_2 = scrollers[divid][ccounters[divid]];
	
  new Effect.Opacity(e_1,
    { duration: 1.0, 
      transition: Effect.Transitions.linear, 
      from: 1.0, to: 0.0,
		afterFinish: function (obj) {
				Element.hide(e_1);
				e_2.setStyle({
					opacity: 0.0
				});
				Element.show(e_2);
				new Effect.Opacity(e_2,
				{ duration: 1.0, 
					transition: Effect.Transitions.linear, 
					from: 0.0, to: 0.99
				});
		}
	});
}

function showCopyrights(id) {
	var e;
	if (e = $(id)) {
		Element.toggle(e);
	}
}