var n='';
var currentFontSize=11;
var currentLineHeight=15;

function changeFontSize(n) {
	if(n == '+') {
		if(currentFontSize < 25) {
			 currentFontSize++;
			 currentLineHeight++;
		}
	}
	else {
		if(currentFontSize > 1) {
			currentFontSize--;
			currentLineHeight--;
		}
	}
	document.getElementById("maincontainer").style.fontSize = currentFontSize + "px";
	document.getElementById("maincontainer").style.lineHeight = currentLineHeight + "px";
}

function resetFontSize() {
	currentFontSize=11;
	currentLineHeight=15;
	document.getElementById("maincontainer").style.fontSize = currentFontSize + "px";
	document.getElementById("maincontainer").style.lineHeight = currentLineHeight + "px";
}