function setActiveStyleSheet(title)
{
	var i, a, j, t;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++)
	{
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title"))
		{
			a.disabled = true;
			if(a.getAttribute("title") == title)
			{
				a.disabled = false; 
			}
		}
	}
	for(j=0; (t = document.getElementsByTagName("span")[j]); j++)
	{	
		if(t.className == "sub-theme") 
		{
			t.style.background = "none";
		}
	}
        if (t = document.getElementById(title))
	{
		t.style.background = "#dedede";
	}
	if(t = document.getElementById('theme_win')) 
	{
		t.style.display="none";
	}
	p = document.getElementById('portfolio');
	if (!p) Portfolio.toggle();
	else
	{
		p_c = document.getElementById('portfolio_container');
		if  (p_c.className == 'hidden') p_c.className = '';
	}
	createCookie("style", title, 365);
	createCookie("ltct",new Date(), 365);
}

function setFirstActiveStyleSheet(title)
{
	var i, a, j, t;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++)
	{
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title"))
		{
			a.disabled = true;
			if(a.getAttribute("title") == title)
			{
				a.disabled = false; 
			}
		}
	}
	for(j=0; (t = document.getElementsByTagName("span")[j]); j++)
	{	
		if(t.className == "sub-theme") 
		{
			t.style.background = "none";
		}
	}
        if (t = document.getElementById(title))
	{
		t.style.background = "#dedede";
	}
	if(t = document.getElementById('theme_win')) 
	{
		t.style.display="none";
	}
	createCookie("style", title, 365);
}

function getActiveStyleSheet() 
{
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) 
	{
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) {return a.getAttribute("title");}
	}
	return null;
}

function getPreferredStyleSheet() 
{
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) 
	{
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("rel").indexOf("alt") == -1 && a.getAttribute("title")) 
			return a.getAttribute("title");
	}
	return null;
}

function createCookie(name,value,days)
{
	if (days) 
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) 
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) 
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;

}

function showchoise()
{
	document.getElementById('theme_win').style.display='block';
	themechoiseflag = "1";
}

function hidechoises()
{
	themechoiseflag = "0";
	setTimeout( "if (themechoiseflag == '0') document.getElementById('theme_win').style.display='none';" , 500 );
}

//window.onload = function(e) 
function themes(ttc)
{
//	var cookie = readCookie("style");
//	var title = cookie ? cookie : getPreferredStyleSheet();
//	setFirstActiveStyleSheet(title);
	var ttcD = new Date(ttc[0]);

	var lastThemeChangeTime = readCookie("ltct");
	var ltctD = new Date(lastThemeChangeTime);
	if (ltctD<ttcD)
		setActiveStyleSheet(ttc[1]);
	else
	{
		var cookie = readCookie("style");
		var title = cookie ? cookie : getPreferredStyleSheet();
		setFirstActiveStyleSheet(title);
	}
}

window.onunload = function(e) 
{
	var title = getActiveStyleSheet();
	createCookie("style", title, 365);
}

/*var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setFirstActiveStyleSheet(title);*/