function setTextSize(size)
{
	if(document.getElementsByTagName)
        {
		var bodyTag = document.getElementsByTagName("body");
		var textsize = document.getElementById('textsize');

		if(bodyTag && textsize) 
                {
			switch(size) 
                        {
				case "small":
					document.getElementById('medium').className = "medium";
					document.getElementById('large').className = "large";
					document.getElementById('content').style.fontSize="77%";
					break;
				case "medium":
					document.getElementById('small').className = "small";
					document.getElementById('large').className = "large";
					document.getElementById('content').style.fontSize="100%";
					break;
				case "large":
					document.getElementById('small').className = "small";
					document.getElementById('medium').className = "medium";
					document.getElementById('content').style.fontSize="1.3em";
					break;
			}
			document.getElementById(size).className += " selected";
		}
	}
}