// JavaScript Document

function replaceImg(sImgName,sImgFile) {
 	document.images[sImgName].src = sImgFile;
}

function swapIn(pagename) {
	replaceImg(pagename,"images/navigation/over/nav" + pagename + ".gif");
}

function swapOut(pagename) {
	replaceImg(pagename,"images/navigation/nav" + pagename + ".gif");
}

function swapOutOn(pagename) {
	replaceImg(pagename,"images/navigation/on/nav" + pagename + ".gif");
}

function swapInSub(pagename) {
	replaceImg(pagename,"images/subnav/over/" + pagename + ".gif");
}

function swapOutSub(pagename) {
	replaceImg(pagename,"images/subnav/" + pagename + ".gif");
}