function CheckMustFields(the_form)
{
var i;
var save=true;
for(i=0; i<= the_form.all.length-1;i++)
	{
		if(the_form.all(i).tag == 'must')
			{
				the_form.all(i).style.backgroundColor = "#ffffff";
				if(the_form.all(i).value == '')
				{
					the_form.all(i).style.backgroundColor = "#2fa9ff";
					save=false;
				}
			}
	}
	
return save;
}

//----------------------------------------------------------------------

function validEmail(email) {
	invalidChars = " /:,;"
			
	if (email == "") {
		return false
	}
	for (i=0; i<invalidChars.length; i++) {
		badChar = invalidChars.charAt(i)
		if (email.indexOf(badChar,0) > -1) {
			return false
		}
	}
	atPos = email.indexOf("@",1)
	if (atPos == -1) {
		return false
	}
	if (email.indexOf("@",atPos+1) != -1) {
		return false
	}
	periodPos = email.indexOf(".",atPos)
	if (periodPos == -1) {
		return false
	}
	if (periodPos+3 > email.length)	{
		return false
	}
	for (i=0; i<email.length; i++) {
		if (email.charAt(i) >="à" && email.charAt(i)<="ú" )  {
			return false
		}
	}
	return true
}