fs_original= 12;
	fs_pas = 0;
	fs_actual = 0;
	function plus_text()
	{
		fs_pas+=2;
		fs_actual = fs_original + fs_pas;
		document.getElementById("page_content").style.fontSize = fs_actual + "px";
		document.getElementById("page_content").style.lineHeight = 1.5;
	}
	
	function minus_text()
	{
		fs_pas-=2;
		if(-fs_pas>fs_original)
		{
			fs_pas = -fs_original;
			return;
		}
		fs_actual = fs_original + fs_pas;
		document.getElementById("page_content").style.fontSize = fs_actual + "px";
		document.getElementById("page_content").style.lineHeight = 1.5;
	}