// Global variables
	var PicArray = new Array();
	var isNav4, isIE4, i_pic_main;
	if (parseInt(navigator.appVersion) >= 4)
		{if (navigator.appName.indexOf("Microsoft") != -1)
			{isNav4 = true;}
		else
			{isIE4 = true;}
		}

function load_pics(pic_dir,pic_prefix,pic_ext,pic_start,pic_end)
	{for (i=PicArray.length, i_pic=pic_start; i_pic <= pic_end; i++, i_pic++)
		{	
		PicArray[i]=new Image();
		PicArray[i].src=pic_dir + pic_prefix + i_pic + pic_ext;
		PicArray[i].pic_name=pic_prefix + i_pic + "_" +i;
		PicArray[i].format=pic_format(PicArray[i]);
		PicArray[i].link=pic_prefix + "/index.html";

		document.write('<td><a HREF="',PicArray[i].link,'"><img name=',PicArray[i].pic_name,' src="',PicArray[i].src,'" height="10" width="10" border="0"></a></td>');
//document.write(i,' ',i_pic,' ',PicArray[i].pic_name,' ', PicArray[i].src, ' ',PicArray[i].format,' ',PicArray[i].width,' ',PicArray[i].height);

		document.close();
		}
	}

function pic_format(pic)
	{if (pic.height > pic.width )
			{pic="portrait";}
		else
			{pic="landscape";}
	return pic;
	}

function swap_img(i_pic_dest, i_pic_src)
	{document.images[PicArray[i_pic_dest].pic_name].src=document.images[PicArray[i_pic_src].pic_name].src;
//	document.links[i_pic_dest].href=document.links[i_pic_src].href;
	document.links[PicArray[i_pic_dest].pic_name].href=document.links[PicArray[i_pic_src].pic_name].href;
	}


function fill_main(img_source)
	{swap_img(i_pic_main.toString(10),img_source);
	}

function img_format(orientation)
	// the CSS case statement doesn't work on all browsers..... 
	{if (orientation == "portrait")
		{ orientation = ' width="81" height="109" ';}
	else
		{ orientation = ' width="108" height="81" ';}
	return orientation;
	}

function fill_index(i_pic,orientation)
	{document.write('<td ',img_format(orientation),'><A HREF="',PicArray[i_pic].link,'" onmouseover="javascript:fill_main(\'',i_pic,'\');return true;"><img ',img_format(orientation),' border="0" name="',PicArray[i_pic].pic_name,'" src="',PicArray[i_pic].src,'"></a></td>');
	document.close();
	}

function display_main(pic)
	{i_pic_main = PicArray.length+1;
	PicArray[i_pic_main]=new Image();
	PicArray[i_pic_main].src=PicArray[pic].src;
	PicArray[i_pic_main].pic_name="main_pic";
	document.write('<td align="center" height="440" width="440"><img name="',PicArray[i_pic_main].pic_name,'" src="',PicArray[i_pic_main].src,'"></td>');
	document.close();
	}

function display_link(i_pic,orientation)
	{document.write('<img ',img_format(orientation),' border="0"name="',PicArray[i_pic].pic_name,'" src="',PicArray[i_pic].src,'">');
	document.close();
	}