// JavaScript Document

var slctd = 1;
var npcount = 6;
var jumpstringindex = 4;
function setcarousel(whichNumOn) {
	YAHOO.util.Dom.setStyle(['circ1','circ2','circ3','circ4','circ5','circ6'],'background-position','bottom left');
	YAHOO.util.Dom.setStyle(['summ1','summ2','summ3','summ4','summ5','summ6'],'display','none');
	YAHOO.util.Dom.setStyle(['np1','np2','np3','np4','np5','np6'],'z-index','0');	
	oncirc = document.getElementById("circ" + whichNumOn);
	YAHOO.util.Dom.setStyle(oncirc,'background-position','top left');
	onsumm = document.getElementById("summ" + whichNumOn);
	YAHOO.util.Dom.setStyle(onsumm,'display','block');
	onnp = document.getElementById("np" + whichNumOn);
	YAHOO.util.Dom.setStyle(onnp,'z-index','2');	
}

function advancer(e,direction,auto) {
	if(!auto){stopauto();}
	if(direction == "prev"){
		if(slctd == 1){
			slctd = npcount;
		} else {
			slctd = (slctd - 1);
		}
	} else {
		if(slctd == npcount){
			slctd = 1;
		} else {
			slctd++;
		}
	}
	setcarousel(slctd);
}

function jumper(e) {
	stopauto();
	tId = this.id;
	slctd = tId.charAt(jumpstringindex);
	setcarousel(slctd);	
}

function stopauto() {if(playon){clearInterval(playon);}}   

YAHOO.util.Event.on("prev1","click",advancer,"prev");
YAHOO.util.Event.on("next1","click",advancer,"next");
YAHOO.util.Event.on(['circ1','circ2','circ3','circ4','circ5','circ6'],"click",jumper);
playon = setInterval("advancer('e','next',1)", 5000);