function swapImg(imgName,imgSrc) {
	document.images[imgName].src = imgSrc;
}
function returnClassName(element) {
	return document.getElementById(element).className;
}
function changeClass(element,newClassName) {
	document.getElementById(element).className = newClassName;
}
function changeClassProperty(className,property,value)	{
	var css;
	if (document.all) {
		css = 'rules';
	} else if (document.getElementById) {
		css = 'cssRules';
	}
	
	for (var StyleLoop = 0; StyleLoop < document.styleSheets.length; StyleLoop++){
		for (var ClassLoop = 0; ClassLoop < document.styleSheets[StyleLoop][css].length; ClassLoop++) {
			if (document.styleSheets[StyleLoop][css][ClassLoop].selectorText.toUpperCase() == className.toUpperCase()) {
				document.styleSheets[StyleLoop][css][ClassLoop].style[property] = value;
			}
		}
	}
}
aSize = [9, 11];
function increase() {
	if (aSize[0] < 12) {
		for (i=0; i<aSize.length; i++) {
			aSize[i] = aSize[i] + 1;
		}		
	}
	changeClassProperty('BODY', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('DIV', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('INPUT', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('A', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('H1', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('H2', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('H3', 'fontSize', (aSize[1] + 'px'));
	changeClassProperty('TD', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('SELECT', 'fontSize', (aSize[0] + 'px'));	
	changeClassProperty('.calendartitle', 'fontSize', (aSize[1] + 'px'));
}
function decrease() {
	if (aSize[0] > 9) {
		for (i=0; i<aSize.length; i++) {
			aSize[i] = aSize[i] - 1;
		}		
	}
	changeClassProperty('BODY', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('DIV', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('INPUT', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('A', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('H1', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('H2', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('H3', 'fontSize', (aSize[1] + 'px'));
	changeClassProperty('TD', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('SELECT', 'fontSize', (aSize[0] + 'px'));
	changeClassProperty('.calendartitle', 'fontSize', (aSize[1] + 'px'));	
}