// JavaScript Document

window.onload = rolloverInit;

function rolloverInit() {
	// for more links
	rolloverInit2("spkr1","spkr1Img",0);
	rolloverInit2("spkr2","spkr2Img",0);
	rolloverInit2("spkr3","spkr3Img",0);
	rolloverInit2("npbot","npbotImg",2);
	rolloverInit2("ppbot","ppbotImg",4);
	rolloverInit2("artNext","artNextImg", 3);
	rolloverInit2("artPrev","artPrevImg",5);

}

function rolloverInit2(x1,x2,x3) {
	var linkObj = document.getElementById(x1);
	var imgObj = document.getElementById(x2);
	if (linkObj && imgObj) { 
		setupRollover(linkObj,imgObj,x3);
	}
}

function setupRollover(thisLink,thisImage,x3) {
  	thisLink.imgToChange = thisImage;
	thisLink.onmouseout = rollOut;
	thisLink.onmouseover = rollOver;
	
	thisLink.outImage = new Image();
	thisLink.outImage.src = thisImage.src;
	
	thisLink.overImage = new Image();
	thisLink.overImage.src = imgs[x3].src;
}

function rollOver() {
	this.imgToChange.src = this.overImage.src;
}

function rollOut() {
	this.imgToChange.src = this.outImage.src;
}