function validate(felem) {
	var why = "";
	var elem;
	var emailFilter=/^.+@.+\..{2,3}$/;
	var illegalChars= /[\(\)\<\>\,\;\:\\\/\"\[\]]/
	
	elem = felem.nombre;
	if (elem) {
		if (elem.value=='' || elem.value==elem.defaultValue) {
			why += "Please enter your name.\n";
		}
	}
		
	elem = felem.telefono;
	if (elem) {
		if (elem.value=='' || elem.value==elem.defaultValue) {
			why += "Please enter your phone number.\n";
		}
	}
	
	elem = felem.mail;
	if (elem) {
		if (elem.value=='' || elem.value==elem.defaultValue) {
			why += "Please enter your e-mail address.\n";
		}
		else if (!emailFilter.test(elem.value) || elem.value.match(illegalChars)) { 
			why += "Please enter a valid e-mail address.\n";
		}
	}

	if (why != "") {
		alert('There are problems with your request:\n\n'+why);
		return false;
	}
	else {
		return true;
	}	
}

function ctf(theText) 
{
	if(theText.value==theText.defaultValue) 
	{
		theText.value = "";
		theText.style.color = "#000000";
	}
}
function rtf(theText) 
{
	if(theText.value=="") 
	{
		theText.value = theText.defaultValue;
		theText.style.color = "#cbcbcb";
	}
}

// Copyright 2006-2007 javascript-array.com

var timeout	= 500;
var closetimer	= 0;
var ddmenuitem	= 0;

// open hidden layer
function mopen(id)
{	
	// cancel close timer
	mcancelclosetime();

	// close old layer
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';

	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.visibility = 'visible';

}
// close showed layer
function mclose()
{
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
}

// go close timer
function mclosetime()
{
	closetimer = window.setTimeout(mclose, timeout);
}

// cancel close timer
function mcancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}

// close layer when click-out
document.onclick = mclose;