function increaseFont() {
	rows = document.getElementsByTagName('p');
	for (i=0;i<rows.length;i++){
		if (rows[i].className == "Cuerpo1"){
			size = rows[i].style.fontSize;
			if (!size) size="100%";
			size = size.substr(0,size.length-1)-0;
			size = size+15;
			size = size + "%";
			rows[i].style.fontSize = size;
		}
	}
}
function decreaseFont() {
	rows = document.getElementsByTagName('p');
	for (i=0;i<rows.length;i++){
		if (rows[i].className == "Cuerpo1"){
			size = rows[i].style.fontSize;
			if (!size) size="100%";
			size = size.substr(0,size.length-1)-0;
			size = size-10;
			if (size<30) size=30;
			size = size + "%";
			rows[i].style.fontSize = size;
		}
	}
}		
function normalFont() {
	rows = document.getElementsByTagName('p');
	for (i=0;i<rows.length;i++){
		if (rows[i].className == "Cuerpo1"){
			rows[i].style.fontSize = "100%";
		}
	}
}