function getCookie(name)
{
	var cname = name + "=";
	var dc = document.cookie;
	if (dc.length > 0)
	{
		begin = dc.indexOf(cname);
		if (begin != -1)
		{
			begin += cname.length;
			end = dc.indexOf(";", begin);
			if (end == -1) end = dc.length;
			return unescape(dc.substring(begin, end));
	    	}
	}
	return null;
}

function setCookie(name, value, expires, path, domain, secure)
{
	document.cookie = name + "=" + escape(value) +
	((expires == null) ? "" : "; expires=" + expires.toGMTString()) +
	((path == null) ? "" : "; path=" + path) +
	((domain == null) ? "" : "; domain=" + domain) +
	((secure == null) ? "" : "; secure");
}

	
function delCookie (name,path,domain)
{
	if (getCookie(name))
	{
		document.cookie = name + "=" +
		((path == null) ? "" : "; path=" + path) +
		((domain == null) ? "" : "; domain=" + domain) +
		"; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}



var firstCall = true;

function changeFontsize(fSize, increment)
{
	if (firstCall)
	{
		firstCall = false;
		if (increment != "")
		changeFontsize('12', '');
	}
	if (document.getElementsByTagName)
	{
		tags = new Array ("p", "li", "h2", "h3", "h4", "h5", "h6", "body", "div", "td", "a");
		for (j=0; j<tags.length; j++)
		{
			var getElement = document.getElementsByTagName(tags[j]);
			var eachElement, currentFontSize, fontIncrease, newFontSize;
			for (i=0; i<getElement.length; i++)
			{
	        		eachElement = getElement[i];
	        		if (increment != "") 
	        		{
	        			currentFontSize = parseInt(eachElement.style.fontSize);
	        			fontIncrease = parseInt(increment);
	        			newFontSize = currentFontSize + fontIncrease;
	        		}
	        	else if (fSize != "")
	        	 newFontSize = parseInt(fSize);
	        	if (tags[j] == "li")
	        		eachElement.style.lineHeight = Math.round(newFontSize*1.2) + "px";
	        	else
	        		eachElement.style.lineHeight = Math.round(newFontSize*1.5) + "px";
	        	if (fSize != "")
	        	{
	        		switch(tags[j])
	        		{
	        			case "h1": newFontSize += 4; break;
	        			case "h2": newFontSize += 3; break;
	        			case "h3": newFontSize += 2; break;
	        			case "h4": newFontSize += 1; break;
	        			case "h5": newFontSize += 1; break;
	        			case "h6": newFontSize += 1;
	        		}
			}
		eachElement.style.fontSize = newFontSize + "px";
		setCookie('fontSize', newFontSize);
			}
		}
	}
}