function trocarImagem(element, imgNome){

	var diretorio = 'imagens/';
	
	if (element){
		var img = element.firstChild;
		
		if (img){
			img.src = diretorio+imgNome;
		}

	}
}

//desabilita menu de opcoes ao clicar no botao direito
function desabilitaMenu(e)
{
if (window.Event)
{
if (e.which == 2 || e.which == 3)
return false;
}
else
{
event.cancelBubble = true
event.returnValue = false;
return false;
}
}

//desabilita botao direito
function desabilitaBotaoDireito(e)
{
if (window.Event)
{
if (e.which == 2 || e.which == 3)
return false;
}
else
if (event.button == 2 || event.button == 3)
{
event.cancelBubble = true
event.returnValue = false;
return false;
}
}

//desabilita botao direito do mouse
if ( window.Event )
document.captureEvents(Event.MOUSEUP);
if ( document.layers )
document.captureEvents(Event.MOUSEDOWN);

document.oncontextmenu = desabilitaMenu;
document.onmousedown = desabilitaBotaoDireito;
document.onmouseup = desabilitaBotaoDireito;




function disableSelection(target){
if (typeof target.onselectstart!="undefined") //IE route
target.onselectstart=function(){return false}
else if (typeof target.style.MozUserSelect!="undefined") //Firefox route
target.style.MozUserSelect="none"
else //All other route (ie: Opera)
target.onmousedown=function(){return false}
target.style.cursor = "default"
}