var curPageNo = 0

// BrowserCheck Object
function BrowserCheck() {
        var b = navigator.appName
        if (b=="Netscape") this.b = "ns"
        else if (b=="Microsoft Internet Explorer") this.b = "ie"
        else this.b = b
        this.version = navigator.appVersion
        this.v = parseInt(this.version)
        this.ns = (this.b=="ns" && this.v>=4)
        this.ns4 = (this.b=="ns" && this.v==4)
        this.ns5 = (this.b=="ns" && this.v==5)
        this.ie = (this.b=="ie" && this.v>=4)
        this.ie4 = (this.version.indexOf('MSIE 4')>0)
        this.ie5 = (this.version.indexOf('MSIE 5')>0)
        this.mac = (navigator.userAgent.indexOf("Mac")>0)
        this.min = (this.ns||this.ie)
        this.aol = (this.version.indexOf('AOL')>0)
}
var is = new BrowserCheck();


function init() {
	setImgs(getPage(0));
}


function turnPage(isfwd){
	BtnName = "p"+isfwd
	theBtn = document.images[BtnName].src;
	if (theBtn.lastIndexOf("dot") < 1) {
		newPageNo = (isfwd==1)?curPageNo+1:curPageNo-1;
		setImgs(getPage(newPageNo));
	}
}


function getPage(pageNo) {
	pagestart = filiimgs.length - pageNo*7 -7;
	pageend = pagestart + 7;
	pagestart = (pagestart<0)?0:pagestart;
	fileList = filiimgs.slice(pagestart,pageend);
	fileList.reverse();
	pageCount = Math.floor(filiimgs.length /  7);
	document.images["p0"].src = (pageNo>0)?"stuff/pu.gif":"stuff/dot.gif";
	document.images["p1"].src = (pageNo<pageCount)?"stuff/pd.gif":"stuff/dot.gif";
	
	//fileList[0] = "dot.gif";
	//alert(filiimgs.length+"-"+pagestart+"-"+pageend);
	//alert(pageNo<pageCount);
	curPageNo = pageNo;
	return fileList;
}

function setImgs(filelist) {
	clearImgs()
	for(i=0;i<filelist.length;i++) {
		imgID = "img"+i;
		file = "thumbs/"+filelist[i];
		//file = file.replace(/\./,"_t.");
		//alert(imgID)
		document.images[imgID].src = file;
	}
	document.images["big"].src = "stuff/dot.gif";
	curfilelist = filelist;
}

function clearImgs() {
	file = "stuff/dot.gif"
	for(i=0;i<7;i++) {
		imgID = "img"+i;
		document.images[imgID].src = file;
	}
}


function setBig(no) {
	document.images["big"].src = "stuff/dot.gif"
	if (no < curfilelist.length) {
		file = "images/"+curfilelist[no]
		setTimeout("bigImg(\""+ file + "\")",300)
	}
}

function bigImg(file) {
	document.images["big"].src = file;
}