function imgOn(imgName) {
	document [imgName].src = eval((imgName) + "On.src");
}
function imgOff(imgName) {
	document [imgName].src = eval((imgName) + "Off.src");
}

function clearValue(fieldID) {
	document.getElementById(fieldID).value = '';
	document.getElementById(fieldID).style.fontStyle = "normal";
	document.getElementById(fieldID).style.color = "black";
	
}