var expDays = 0;
var exp = new Date(); 
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));
var page = 0;
current = 0;
pg = "page";



function flip(targetImage, flipTo)
	{
   	if (document.images)
    		{
      		document.images[targetImage].src= flipTo;
    		}
 	}



function SetCookie (name, value) 
	{  
	var argv = SetCookie.arguments;  
	var argc = SetCookie.arguments.length;  
	var expires = (argc > 2) ? argv[2] : null;  
	var path = (argc > 3) ? argv[3] : null;  
	var domain = (argc > 4) ? argv[4] : null;  
	var secure = (argc > 5) ? argv[5] : false;  
	document.cookie = name + "=" + escape (value) + 
	((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
	((path == null) ? "" : ("; path=" + path)) +  
	((domain == null) ? "" : ("; domain=" + domain)) +    
	((secure == true) ? "; secure" : "");
	}



function getPage(info)
	{
	var pageNumber = GetCookie('GHDportCookie')
	if (pageNumber == null) 
		{
		pageNumber = 0;
		SetCookie ('GHDportCookie', pageNumber);
		}
	return pageNumber;
	}



function getCookieVal (offset) 
	{  
	var endstr = document.cookie.indexOf (";", offset);  
	if (endstr == -1)    
	endstr = document.cookie.length;  
	return unescape(document.cookie.substring(offset, endstr));
	}


function GetCookie (name)
	{  
	var arg = name + "=";  
	var alen = arg.length;  
	var clen = document.cookie.length;  
	var i = 0;  
	while (i < clen) 
		{    
		var j = i + alen;    
		if (document.cookie.substring(i, j) == arg)      
		return getCookieVal (j);    
		i = document.cookie.indexOf(" ", i) + 1;    
		if (i == 0) break;   
		}  
	return null;
	}



function prev(port)
      	{ 
	current = getPage();

	if (current > 1)
		{
		current--;
		}

	pg = port;
	pg += current;
	pg += ".htm";

	parent.location=pg;
	}


function next(port)
      	{ 
	current = getPage();
	current++;

	pg = port;
	pg += current;
	pg += ".htm";

	parent.location=pg;
	}


function pop(port,w,h)
      	{ 
	pg = port;
	pg += getPage();
	pg += ".htm";
	dim = "width=";

	dim += w;
	dim += ",height=";
	dim += h;
	dim += ",scrollbars=no";

	window.open(pg,'mywindow',dim);
	}


function show(type)
	{
	path = "portfolio/zoom/";
	path += type;
	path += getPage();
	path += ".gif";

	flip(0,path)
 	}