/* JavaScript Document */

var min=8;
var max=24;

var elementTypes = new Array()
elementTypes[0] = "p"
elementTypes[1] = "a"
elementTypes[2] = "li"
elementTypes[3] = "div"
elementTypes[4] = "h1"
elementTypes[5] = "h2"

function increaseFontSize() {
	for (i=0;i<elementTypes.length;i++){
		var elementName = elementTypes[i];
		var p = document.getElementsByTagName(elementName);
		for(j=0;j<p.length;j++) {
			if(p[j].style.fontSize) {
			var s = parseInt(p[j].style.fontSize.replace("px",""));
		} else {
			var s = 14;
		}
		if(s!=max) {
			s += 1;
		}
		p[j].style.fontSize = s+"px"
		}
	}
}
function decreaseFontSize() {
	for (i=0;i<elementTypes.length;i++){
		var elementName = elementTypes[i];
		var p = document.getElementsByTagName(elementName);
		for(j=0;j<p.length;j++) {
			if(p[j].style.fontSize) {
				var s = parseInt(p[j].style.fontSize.replace("px",""));
		} else {
			var s = 14;
		}
		if(s!=min) {
			s -= 1;
		}
		p[j].style.fontSize = s+"px"
		}
	}   
}