var maxScale = 300;
var minScale = 100;
var currentScale = 100;

function scaleUp() {
 if ( currentScale < maxScale ) {
 // Increase our scale by 10%
 currentScale += 10;

 updateScales();
 setCookie('fontScale', currentScale, 365);
 }
}

function scaleDown() {
 if ( currentScale > minScale ) {
 // Decrease our scale by 10%
 currentScale -= 10;

 updateScales();
 setCookie('fontScale', currentScale, 365);
 }
}

function updateScales() {
 var contentRule = new Array();
 contentRule = getCSSRule('#main_content_container');

 if ( contentRule ) {
 contentRule.style.fontSize = currentScale + "%";
 }
}

function emptyfield (field) {
	document.getElementById(field).value='';
}