var toolTip = false; 
var lastItem ='';

// We check if the user fill up all the mandatory fields in the login form
function checkLogin(form){
	if (form.email.value.length < 1) {
		alert("Por favor escribe tu dirección de email.");
		return false;
	}
	
	if (form.pass.value.length < 1) {
		alert("Por favor escribe tu contraseña.");
		return false;
	}
	
	return true;
}

function showToolTip(nameObj, obj, offX, offY) {
	// Is a DOM browser?
	DOM = (document.getElementById);
	ALL = (document.all);
	
	if (DOM) {
		var elem = document.getElementById(nameObj);
	} else if (ALL) {
		var elem = document.all[nameObj];
	}
	
	if ((DOM) || (ALL)) {
		var newX = findPosX(obj);
		var newY = findPosY(obj);

		if (offX) {
			newX = newX + offX;
		} else {
			if (obj.height) {
				newX = newX + obj.width;
			}
		}
		
		if (offY) {
			newY = newY + offY;
		} else {
			if (obj.width) {
				newY = newY + obj.height;
			}
		}
		
		elem.style.top = newY + 'px';
		elem.style.left = newX + 'px';
		elem.style.display = 'block';
	}
}

function hideToolTip(nameObj) {
	// Is a DOM browser?
	hideObject(nameObj);
}

// find the pos (x-axis) of a given object (obj)
function findPosX(obj) {
	var curleft = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curleft += obj.offsetLeft
			obj = obj.offsetParent;
		}
	}
	else if (obj.x)
		curleft += obj.x;
	return curleft;
}

// find the pos (y-axis) of a given object (obj)
function findPosY(obj) {
	var curtop = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curtop += obj.offsetTop
			obj = obj.offsetParent;
		}
	}
	else if (obj.y)
		curtop += obj.y;
	return curtop;
}

function showHideObject(nameObj) {
	// Is a DOM browser?
	DOM = (document.getElementById);
	ALL = (document.all);
	
	
	if (lastItem != '') {
		if (DOM) {
			var oldElem1 = document.getElementById(lastItem);
			var oldElem2 = document.getElementById('s'+lastItem);
		} else if (ALL) {
			var oldElem1 = document.all[lastItem];
			var oldElem2 = document.all['s'+lastItem];
		}

		// hide last item	
		if ((DOM) || (ALL)) {
			if (oldElem1.style.display == 'block') {
				oldElem1.style.display = 'none';
			}
			if (oldElem2.style.display == 'block') {
				oldElem2.style.display = 'none';
			}
		}
	} 
	
	if (DOM) {
		var elem1 = document.getElementById(nameObj);
		var elem2 = document.getElementById('s'+nameObj);
	} else if (ALL) {
		var elem1 = document.all[nameObj];
		var elem2 = document.all['s'+nameObj];
	}
	
	// show item
	if (lastItem != nameObj) {
		if ((DOM) || (ALL)) {
			if (elem1.style.display == 'none') {
				elem1.style.display = 'block';
			} else if (elem1.style.display == '') {
				elem1.style.display = 'block';
			}
			if (elem2.style.display == 'none') {
				elem2.style.display = 'block';
			} else if (elem2.style.display == '') {
				elem2.style.display = 'block';
			}
		}
		lastItem = nameObj;
	} else {
		lastItem = '';
	}
}

function hideObject(nameObj) {
	// Is a DOM browser?
	DOM = (document.getElementById);
	ALL = (document.all);
	
	if (DOM) {
		var elem = document.getElementById(nameObj);
	} else if (ALL) {
		var elem = document.all[nameObj];
	}
	
	if ((DOM) || (ALL)) {
		elem.style.display = 'none';
	}
}

function encender(src,color){ 
	src.bgColor=color;
}

function apagar(src,clrIn)
{
	src.bgColor=clrIn;
}