stylesheetTitles = new Array("small","med","large");


function increase()
	{
	if (textsize < stylesheetTitles.length-1)
		{
		textsize++; 
		var title = stylesheetTitles[textsize]; 
		setActiveStyleSheet(title); 
		document.getElementById("minus").src="/images/abouttext_minus.jpg"; 
		
		if (textsize == stylesheetTitles.length-1)
			{
			document.getElementById("plus").src="/images/abouttext_plus_ia.jpg"; 
			
			}			
		}
	}
	
function decrease()
	{
	if (textsize > 0)
		{
		textsize--; 
		var title = stylesheetTitles[textsize]; 
		setActiveStyleSheet(title); 
		document.getElementById("plus").src="/images/abouttext_plus.jpg"; 
		if (textsize == 0)
			{
			document.getElementById("minus").src="/images/abouttext_minus_ia.jpg"; 
			}
		}
	}
	
function setActiveStyleSheet(title)
	{
	var i, a, main;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) 
  		{
    	if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) 
			{
      		a.disabled = true; //disables all stylesheets
     		if(a.getAttribute("title") == title) a.disabled = false; 
    		}
  		}
	}
	

window.onunload = function(e)
	{
	createCookie("fccoc_style", textsize, 365);
	}

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 = "";
		var textsizeString = String(value); 
		document.cookie = name+"="+textsizeString+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;
	}

var cookie = parseInt(readCookie("fccoc_style")); 
textsize = (cookie ? cookie : 0); 
var title = stylesheetTitles[textsize]; 
setActiveStyleSheet(title);