function $(id) {
    return document.getElementById(id);
}

function EmptyField(field) {
    
    var fieldValue = $(field + '').value.replace(/ /g, '');

    if (fieldValue.length == 0) {
        return true;
    } else {
        return false;
    }
}

function TextAreaMaxLength(controle, tam, tipo)
{
    var n_car = controle.value.length;
    if (n_car > tam) {
        if(tipo == "cortar") {
            controle.value = controle.value.slice(0,tam);
        }
        return false;
     }
    return true;
}

function EqualInputValue(input1, input2) {
    var txt1 = $(input1 + '');
    var txt2 = $(input2 + '');
    
    if (txt1.value == txt2.value) {
        return true;
    } else {
        return false;
    }
}

function EnterPressed(evt) {
    var charCode = (evt.which) ? evt.which : event.keyCode;
    
    if (charCode == '13') {
        return true;
    }
    
    return false;
}


function addLoadEvent(func)
{
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
    	window.onload = func;
	} else {
		window.onload = function(){
		oldonload();
		func();
		}
	}
}