function HideShowElementById (idElement) {
	var element = document.getElementById(idElement);
	HideShowElement (element);
}
function SetDisplayElement (element, disp) {
	element.style.display = disp;
}
function HideShowElementByDisplay (element, disp) {
	element.style.display = (element.style.display == disp)?'none':disp;
}
function HideShowElement (element) {
	element.style.display = (element.style.display == 'block')?'none':'block';
}