PreLoadIMG('./img/nav1a.gif','./img/nav2a.gif','./img/nav3a.gif','./img/nav4a.gif','./img/nav5a.gif');

function PreLoadIMG() {
	gList = new Array();
	var xRes = PreLoadIMG.arguments;
	var xNum = xRes.length;
	var i;
	var j = gList.length;
	for(i=0; i<xNum; i++){
		gList[j] = new Image;
		gList[j++].src = xRes[i];
	}
}

function fsSwapImg(xFile,xName) {
	if(navigator.appVersion.charAt(0)>=3){
		Img0 = new Image();
		if(xFile == 0){
			Img0.src= gLastImg;
			gLastImg = "";
			document.images[xName].src=Img0.src;
		}else{
			gLastImg = document.images[xName].src
			Img0.src= gList[xFile-1].src;
		}
		document.images[xName].src=Img0.src;
	}
}