var checkObjects	= new Array();
var errors			    = "";
var returnVal		    = false;
var language		    = new Array();
language["header"]	= "Ocorreu o seguinte erro:"
language["start"]	  = "->";
language["field"]	  = " Campo ";
language["require"]	= " é de preenchimento obrigatório";
language["min"]		  = " e deve consistir de pelo menos ";
language["max"]		  = " e não deve conter mais de ";
language["minmax"]	= " e não mais de ";
language["chars"]	  = " caracteres ";
language["num"]		  = " e deve conter um número ";
language["email"]	  = " deve conter um e-mail válido ";
language["lista"]	= " é de preenchimento obrigatório. Escolha um elemento da lista.";

// -----------------------------------------------------------------------------
// define - Call this function in the beginning of the page. I.e. onLoad.
// n    = name of the input field (Required)
// type = string, num, email (Required)
// min  = the value must have at least [min] characters (Optional)
// max  = the value must have maximum [max] characters (Optional)
// d    = (Optional)
// -----------------------------------------------------------------------------

function LimpaEspacos( strFormName, strFieldName) {
var objField = eval( "document.forms['" + strFormName + "']."+ strFieldName);
var strFieldValue = objField.value;

	while( (i = strFieldValue.indexOf(' ',0)) != -1) {
		strFieldValue = strFieldValue.substring( 0, i) + strFieldValue.substring( i+1);
	}

	objField.value = strFieldValue;
}


function define(n, type, HTMLname, min, max, d) {
var p;
var i;
var x;

	if (!d) d = document;
	if ((p=n.indexOf("?"))>0&&parent.frames.length) {
		d = parent.frames[n.substring(p+1)].document;
		n = n.substring(0,p);
	}

	if (!(x = d[n]) && d.all) x = d.all[n];
	
	for (i = 0; !x && i < d.forms.length; i++) {
		x = d.forms[i][n];
	}

	for (i = 0; !x && d.layers && i < d.layers.length; i++) {
		x = define(n, type, HTMLname, min, max, d.layers[i].document);
		return x;       
	}
	
	eval("V_"+n+" = new formResult(x, type, HTMLname, min, max);");
	checkObjects[eval(checkObjects.length)] = eval("V_"+n);
}

function formResult(form, type, HTMLname, min, max) {

	this.form = form;
	this.type = type;
	this.HTMLname = HTMLname;
	this.min  = min;
	this.max  = max;
}

function validate() {

	if (checkObjects.length > 0) {

		errorObject = "";

		for (i = 0; i < checkObjects.length; i++) {

			validateObject = new Object();
			validateObject.type = checkObjects[i].type;
			validateObject.form = checkObjects[i].form;
			validateObject.HTMLname = checkObjects[i].HTMLname;
			validateObject.val = checkObjects[i].form.value;
			validateObject.len = checkObjects[i].form.value.length;
			validateObject.min = checkObjects[i].min;
			validateObject.max = checkObjects[i].max;

			if (validateObject.type == "num" || validateObject.type == "string") {
				if ((validateObject.type == "num" && validateObject.len <= 0) || (validateObject.type == "num" && isNaN(validateObject.val))) 
				{ 
					errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + language['num'] + "\n";
				} else if (validateObject.min && validateObject.max && (validateObject.len < validateObject.min || validateObject.len > validateObject.max)) 
				{ 
					errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + language['min'] + validateObject.min + language['minmax'] + validateObject.max+language['chars'] + "\n";
				} else if (validateObject.min && !validateObject.max && (validateObject.len < validateObject.min)) 
				{ 
					errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + language['min'] + validateObject.min + language['chars'] + "\n";
				} else if (validateObject.max && !validateObject.min &&(validateObject.len > validateObject.max)) 
				{ 
					errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + language['max'] + validateObject.max + language['chars'] + "\n";
				} else if (!validateObject.min && !validateObject.max && validateObject.len <= 0) 
				{ 
					errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + "\n";
				}
			} else if(validateObject.type == "lista")
			{
				if ( (validateObject.val == null) || (validateObject.val == "0") ) {
					errors += language['start'] + language['field'] + validateObject.HTMLname + language['lista'] + "\n";
				}
 			} else if(validateObject.type == "email") 
			{
				// Verificar a existencia de "@" e ".". 
				// O comprimento deverá ser > 5 e o "." não deve 
				// estar imediatamente junto ao "@"
				if ((validateObject.val.indexOf("@") == -1) || 
				    (validateObject.val.charAt(0) == ".") || 
				    (validateObject.val.charAt(0) == "@") || 
				    (validateObject.len < 6) || 
				    (validateObject.val.indexOf(".") == -1) || 
				    (validateObject.val.charAt(validateObject.val.indexOf("@")+1) == ".") || 
				    (validateObject.val.charAt(validateObject.val.indexOf("@")-1) == ".")) 
				{ 
					errors += language['start'] + language['field'] + validateObject.HTMLname + language['email'] + "\n"; 
				}
			}
		}
	}
	if (errors) {
		alert(language["header"].concat("\n" + errors));
		errors = "";
		returnVal = false;
	} else {
		returnVal = true;
   }
}