private Tree variablesPro(){
		Tree varDeclaration = null;
		
		if(accept(Symbol.Id.KEYWORD,"var")!=null){
			if((varDeclaration = variableListPro()) != null){
				accept(Symbol.Id.PUNCTUATORS,";");
				return new VariableDeclarationStatement(varDeclaration);
			}
		}
		
		return null;
	}