function onFocus(aFrm, aCampo){
	stringClassName = document.forms[aFrm].elements[aCampo.name].className;
	pos = stringClassName.indexOf(' ');
	if(pos != -1){
		document.forms[aFrm].elements[aCampo.name].className = stringClassName.substring(0,pos) + " fieldOnFocus";
	}else{
		document.forms[aFrm].elements[aCampo.name].className += " fieldOnFocus";
	}
}

function onBlur(aFrm, aCampo){
	stringClassName = document.forms[aFrm].elements[aCampo.name].className;
	pos = stringClassName.indexOf(' ');
	document.forms[aFrm].elements[aCampo.name].className = stringClassName.substring(0,pos) + " fieldOnBlur";
}

function selectCheckbox(anOidElement){
	checkToSelect = document.getElementById(anOidElement);
	if(checkToSelect.checked == true){
		checkToSelect.checked = false;
	}else{
		checkToSelect.checked = true;
	}
}

function openChatMSN(){
	window.open('http://settings.messenger.live.com/Conversation/IMMe.aspx?invitee=1e975d15ccd3d9e7@apps.messenger.live.com&mkt=pt-PT', 'Atendimento','width=500,height=400,resizable=0');
}