function printPage() {
	if(window.print) {
		window.print()
	} else  {
		alert("Sorry, your browser doesn't support this feature.");
	}
}

function showElement(e) {
	e.style.display = "block";
}

function hideElement(e) {
	e.style.display = "none";
}

function showHideElement(id) {
	var e = document.getElementById(id);
	
	if(e.style.display == "block") {
		hideElement(e);
	} else {
		showElement(e);
	}
}

function toNumber(e) {
	var s = e.value;
	
	while(s.indexOf(',') != -1) {
		s = s.replace(',', '');
	}
	
	while(s.indexOf('$') != -1) {
		s = s.replace('$', '');
	}
	
	if(isNaN(s)) {
		//alert("Please input a numeric value.");
	}
	
	e.value = s;
}