// JavaScript Document

// pages are all named galleryN.html

// gallery pages are always numbered 01 thru NN - two digits          format = galleryXX.html
// pages of same gallery reside in same folder



// ----------


var totalCaseworkPages=5
var totalTablePages=18
var totalChairPages=13
var totalBedPages=3
var totalInlayPages=7


// ----------


function pageChange(change,totalPages)   // change = "back" or "next"
{
var pos=document.URL.length-7
var pageNum = Number(document.URL.substr(pos,2))

if(change=="next")
{
	pageNum++
}
else
{
	pageNum--	
}


if(pageNum>totalPages)
{
	pageNum=1
}

if(pageNum<1)
{
	pageNum=totalPages
}

if(pageNum<10)  // two digits required
{
	pageNum="0"+pageNum
}

top.location.href = "gallery" + pageNum + ".html"
}


// ---------- 


function galleryNav(galleryName,change)
{

if(galleryName=="casework")
{
	pageChange(change,totalCaseworkPages)
}

if(galleryName=="table")
{
	pageChange(change,totalTablePages)
}

if(galleryName=="chair")
{
	pageChange(change,totalChairPages)
}

if(galleryName=="bed")
{
	pageChange(change,totalBedPages)
}

if(galleryName=="inlay")
{
	pageChange(change,totalInlayPages)
}

}