window.onload = function () {	
	document.oForm.onsubmit = function () {return formValidation();};		
}

function formValidation() {
	if(!nonBlank(oForm.sUserName, "Please enter your name!")) {
		return false;
	}
	
	if(oForm.sShoutout) {
		if(!nonBlank(oForm.sShoutout, "Please enter the shoutout!")) {
			return false;
		}
	}
	
	if(oForm.sTrackName) {
		if(!nonBlank(oForm.sTrackName, "Please enter the name of the track!")) {
			return false;
		}
	}
	if(oForm.sArtistName) {
		if(!nonBlank(oForm.sArtistName, "Please enter the name of the artist!")) {
			return false;
		}
	}	
	
	return true;
}