var min=10;
var max=14;
function increaseFontSize()
	{
	var p = document.getElementById('body');
	if(p.style.fontSize!="")
	{
		var s = parseInt(p.style.fontSize.replace("px",""));
	} 
	else
	{
		var s = 12;
	}
	if(s!=max)
	{
		s += 1;
		p.style.fontSize = s+"px";
		var mydate = new Date();
		var hour = mydate.getHours();
		hour = hour+336;
		mydate.setHours(hour);
		document.cookie = "fontsize="+s+"px ; path=/ ; expires="+mydate;
	}
}
function decreaseFontSize()
	{
	var p = document.getElementById('body');
	if(p.style.fontSize!="")
	{
		var s = parseInt(p.style.fontSize.replace("px",""));
	} 
	else
	{
		var s = 12;
	}
	if(s!=min)
	{
		s -= 1;
		p.style.fontSize = s+"px";
		var mydate = new Date();
		var hour = mydate.getHours();
		hour = hour+336;
		mydate.setHours(hour);
		document.cookie = "fontsize="+s+"px ; path=/ ; expires="+mydate;
	}
}