function mask(isNum, event, field, mask, maxLength) 
{
	var keyCode;
	if (event.srcElement)
		keyCode = event.keyCode;
	else if (event.target)
		keyCode = event.which;
	var maskStack = new Array();
	var isDynMask = false;
	if (mask.indexOf('[') != -1)
		isDynMask = true;
	var length = mask.length;
	for (var i = 0; i < length; i++)
		maskStack.push(mask.charAt(i));
	var value = field.value;
	var i = value.length;
	if (keyCode == 0 || keyCode == 8)
		return true;
	//código adaptado para aceitar X (maiúsculo) ou x (minúsculo), além de números
	if (isNum && (keyCode < 48 || keyCode > 57) && (keyCode != 88) && (keyCode != 120))
		return false;
	if (!isDynMask && i < length) {
		if (maskStack.toString().indexOf(String.fromCharCode(keyCode)) != -1 && keyCode != 8) {
			return false;
		} else {
			if (keyCode != 8) {
				if (maskStack[i] != '#') {
					var old = field.value;
					field.value = old + maskStack[i];
				}			
			}
			if (autoTab(field, keyCode, length)) {
				if (!document.layers) {
					return true;
				} else if (keyCode != 8) {
					field.value += String.fromCharCode(keyCode);
					return false;
				} else {
					return true;
				}
			} else {
				return false;
			}				
		}
	} else if (isDynMask) { 
		var maskChars = "";
		for (var j = 0; j < maskStack.length; j++)
			if (maskStack[j] != '#' && maskStack[j] != '[' && maskStack[j] != ']')
				maskChars += maskStack[j];
		var tempValue = "";
		for (var j = 0; j < value.length; j++) {
			if (maskChars.indexOf(value.charAt(j)) == -1)
				tempValue += value.charAt(j);
		}
		value = tempValue + String.fromCharCode(keyCode);
		if (maskChars.indexOf(String.fromCharCode(keyCode)) != -1) {
			return false;
		} else {
			var staticMask = mask.substring(mask.indexOf(']') + 1);
			var dynMask = mask.substring(mask.indexOf('[') + 1, mask.indexOf(']'));
			var realMask = new Array;
			if (mask.indexOf('[') == 0) {
				var countStaticMask = staticMask.length - 1;
				var countDynMask = dynMask.length - 1;
				for (var j = value.length - 1; j >= 0; j--) {
					if (countStaticMask >= 0) {
						realMask.push(staticMask.charAt(countStaticMask));
						countStaticMask--; 
					} 
					if (countStaticMask < 0) {
						if (countDynMask >= 0) {
							if (dynMask.charAt(countDynMask) != '#') {
								realMask.push(dynMask.charAt(countDynMask));
								countDynMask--;
							}
						}
						if (countDynMask == -1) {
							countDynMask = dynMask.length - 1;
						}
						realMask.push(dynMask.charAt(countDynMask));
						countDynMask--; 
					}
				}
			}
			var result = "";
			var countValue = 0;
			while (realMask.length > 0) {
				var c = realMask.pop();	
				if (c == '#') {
					result += value.charAt(countValue);
					countValue++;	
				} else {
					result += c;
				}
			}
			field.value = result;
			if (maxLength != undefined &&  value.length == maxLength) {
				var form = field.form;
				for (var i = 0; i < form.elements.length; i++) {
					if (form.elements[i] == field) {
						field.blur();
						//if alterado para quando a máscara for utilizada no último campo, não dê mensagem de erro quando tentar colocar o foco no "Salvar"
						//if (form.elements[i + 1] != null)										 
						if ((form.elements[i + 1] != null) && (form.elements[i + 1].name != "METHOD"))
							form.elements[i + 1].focus();
						break;
					}
				}
			}
			return false;
		}
	} else {
		return false;
	}
	function autoTab(field, keyCode, length) {
		var i = field.value.length;
		if (i == length - 1) {
			field.value += String.fromCharCode(keyCode);
			var form = field.form;
			for (var i = 0; i < form.elements.length; i++) {
				if (form.elements[i] == field) {
					field.blur();										 
					//if alterado para quando a máscara for utilizada no último campo, não dê mensagem de erro quando tentar colocar o foco no "Salvar"
					//if (form.elements[i + 1] != null)
					if ((form.elements[i + 1] != null) && (form.elements[i + 1].name != "METHOD"))
						form.elements[i + 1].focus();
					break;
				}
			}
			return false;
		} else {
			return true;
		}	
	}
}


function mask2(isNum, event, field, mask, maxLength) 
{
	var keyCode;
	if (event.srcElement)
		keyCode = event.keyCode;
	else if (event.target)
		keyCode = event.which;
	var maskStack = new Array();
	var isDynMask = false;
	if (mask.indexOf('[') != -1)
		isDynMask = true;
	var length = mask.length;
	for (var i = 0; i < length; i++)
		maskStack.push(mask.charAt(i));
	var value = field.value;
	var i = value.length;
	if (keyCode == 0 || keyCode == 8)
		return true;
	//código adaptado para aceitar X (maiúsculo) ou x (minúsculo), além de números
	if (isNum && (keyCode < 48 || keyCode > 57) && (keyCode != 88) && (keyCode != 120))
		return false;
	if (!isDynMask && i < length) {
		if (maskStack.toString().indexOf(String.fromCharCode(keyCode)) != -1 && keyCode != 8) {
			return false;
		} else {
			if (keyCode != 8) {
				if (maskStack[i] != '#') {
					var old = field.value;
					field.value = old + maskStack[i];
				}			
			}
//			if (autoTab(field, keyCode, length)) {
//				if (!document.layers) {
//					return true;
//				} else if (keyCode != 8) {
//					field.value += String.fromCharCode(keyCode);
//					return false;
//				} else {
//					return true;
//				}
//			} else {
//				return false;
//			}				
		}
	} else if (isDynMask) { 
		var maskChars = "";
		for (var j = 0; j < maskStack.length; j++)
			if (maskStack[j] != '#' && maskStack[j] != '[' && maskStack[j] != ']')
				maskChars += maskStack[j];
		var tempValue = "";
		for (var j = 0; j < value.length; j++) {
			if (maskChars.indexOf(value.charAt(j)) == -1)
				tempValue += value.charAt(j);
		}
		value = tempValue + String.fromCharCode(keyCode);
		if (maskChars.indexOf(String.fromCharCode(keyCode)) != -1) {
			return false;
		} else {
			var staticMask = mask.substring(mask.indexOf(']') + 1);
			var dynMask = mask.substring(mask.indexOf('[') + 1, mask.indexOf(']'));
			var realMask = new Array;
			if (mask.indexOf('[') == 0) {
				var countStaticMask = staticMask.length - 1;
				var countDynMask = dynMask.length - 1;
				for (var j = value.length - 1; j >= 0; j--) {
					if (countStaticMask >= 0) {
						realMask.push(staticMask.charAt(countStaticMask));
						countStaticMask--; 
					} 
					if (countStaticMask < 0) {
						if (countDynMask >= 0) {
							if (dynMask.charAt(countDynMask) != '#') {
								realMask.push(dynMask.charAt(countDynMask));
								countDynMask--;
							}
						}
						if (countDynMask == -1) {
							countDynMask = dynMask.length - 1;
						}
						realMask.push(dynMask.charAt(countDynMask));
						countDynMask--; 
					}
				}
			}
			var result = "";
			var countValue = 0;
			while (realMask.length > 0) {
				var c = realMask.pop();	
				if (c == '#') {
					result += value.charAt(countValue);
					countValue++;	
				} else {
					result += c;
				}
			}
			field.value = result;
			if (maxLength != undefined &&  value.length == maxLength) {
				var form = field.form;
				for (var i = 0; i < form.elements.length; i++) {
					if (form.elements[i] == field) {
						field.blur();
						//if alterado para quando a máscara for utilizada no último campo, não dê mensagem de erro quando tentar colocar o foco no "Salvar"
						//if (form.elements[i + 1] != null)										 
						if ((form.elements[i + 1] != null) && (form.elements[i + 1].name != "METHOD"))
							form.elements[i + 1].focus();
						break;
					}
				}
			}
			return false;
		}
	} else {
		return false;
	}
//	function autoTab(field, keyCode, length) {
//		var i = field.value.length;
//		if (i == length - 1) {
//			field.value += String.fromCharCode(keyCode);
//			var form = field.form;
//			for (var i = 0; i < form.elements.length; i++) {
//				if (form.elements[i] == field) {
//					field.blur();										 
//					//if alterado para quando a máscara for utilizada no último campo, não dê mensagem de erro quando tentar colocar o foco no "Salvar"
//					//if (form.elements[i + 1] != null)
//					if ((form.elements[i + 1] != null) && (form.elements[i + 1].name != "METHOD"))
//						form.elements[i + 1].focus();
//					break;
//				}
//			}
//			return false;
//		} else {
//			return true;
//		}	
//	}
}