loadVariables Problem

1 
Dados = new LoadVars();
		StrDados = some url;
		Dados.load(StrDados);
		
		Dados.onLoad = function(success) {
			
			if (success == true) {
				
			   //call function
			  _root.ProdutoDetailEditar();
			
			
			} else {
				
			}
};

I have a menu with five buttons, each button calls the script above, its works fine…unless i click for examle in 2 buttons very fast without wait for data after Dados.load(StrDados) i causes to flash to crashs, this happens because i do not wait for the load()

anyboby knows a way to interrupt the Dados.load(StrDados) when its awainting for the data, when i click in other button to call the same script

thanks!!!