// - TRIM --------------------------------------------------------------------------
function trim(str)
{ 
	return str.replace(/^\s+|\s+$/g, ""); 
}
function leftTrim(str)
{ 
	return str.replace(/^\s+/, ""); 
}
function rightTrim(str)
{ 
	return str.replace(/\s+$/, ""); 
}

// - PAD --------------------------------------------------------------------------	
function padright(val, ch, num)
{
	var re = new RegExp("^.{" + num + "}");
	var pad = "";
	do 
	{
		pad += ch;
	} while (pad.length < num)
	return re.exec(val + pad);
}
function padleft(val, ch, num) 
{
	var re = new RegExp(".{" + num + "}$");
	var pad = "";
	if (!ch) ch = " ";
	do  
	{
		pad += ch;
	} while(pad.length < num);
	return re.exec(pad + val);
}

// - CASE --------------------------------------------------------------------------	
function toUpper(obj) {
	obj.value = obj.value.toUpperCase();
}	
function toLower(obj) {
	obj.value = obj.value.toLowerCase();
}

// - KEY PRESSED --------------------------------------------------------------------------	
function getSpecialKeyPressed(keyDownEvent) {
	var keyCode = keyDownEvent.keyCode || keyDownEvent.which;
	var keyName;

	switch (keyCode) {
		case 8:   keyName = "Backspace"; break;
		case 9:   keyName = "Tab"; break;
		case 13:  keyName = "Enter"; break;
		case 16:  keyName = "Shift"; break;
		case 17:  keyName = "Ctrl"; break;
		case 18:  keyName = "Alt"; break;
		case 19:  keyName = "Break"; break;
		case 20:  keyName = "CapsLock"; break;
		case 27:  keyName = "Esc"; break;
		case 33:  keyName = "PageUp"; break;
		case 34:  keyName = "PageDown"; break;
		case 35:  keyName = "End"; break;
		case 36:  keyName = "Home"; break;
		case 37:  keyName = "ArrowLeft"; break;
		case 38:  keyName = "ArrowUp"; break;
		case 39:  keyName = "ArrowRight"; break;
		case 40:  keyName = "ArrowDown"; break;
		case 45:  keyName = "Insert"; break;
		case 46:  keyName = "Delete"; break;
		case 91:  keyName = "WinStart"; break;
		case 112: keyName = "F1"; break;
		case 113: keyName = "F2"; break;
		case 114: keyName = "F3"; break;
		case 115: keyName = "F4"; break;
		case 116: keyName = "F5"; break;
		case 117: keyName = "F6"; break;
		case 118: keyName = "F7"; break;
		case 119: keyName = "F8"; break;
		case 120: keyName = "F9"; break;
		case 121: keyName = "F10"; break;
		case 122: keyName = "F11"; break;
		case 123: keyName = "F12"; break;
		case 144: keyName = "NumLock"; break;
		case 145: keyName = "ScrollLock"; break;
	}
	if (keyName == null && !keyDownEvent.ctrlKey && !keyDownEvent.altKey) {
		return null;
	}
	if (keyDownEvent.ctrlKey && keyDownEvent.altKey && keyName == null) {
		return null;
	}

	if (keyDownEvent.ctrlKey || keyDownEvent.altKey) {
		if (keyName != "Ctrl" && keyName != "Alt") {
			if (keyName == null) {
				keyName = String.fromCharCode(keyCode);
			}
			if (keyDownEvent.ctrlKey && keyDownEvent.altKey) {
				keyName = "Ctrl+Alt+" + keyName;
			} else if (keyDownEvent.ctrlKey) {
				keyName = "Ctrl+" + keyName;
			} else if (keyDownEvent.altKey) {
				keyName = "Alt+" + keyName;
			}
		}
	} 
	return keyName;
}

function getAlfaNumPressed(keyDownEvent) {
	if (keyDownEvent.ctrlKey || keyDownEvent.altKey) {
		return null;
	}

	var keyCode = keyDownEvent.keyCode   || keyDownEvent.which;
	if (keyCode >= 96 && keyCode <= 105) { //Numbers 0-9 on numeric keypad
		keyCode -= 48;
	}

	if((keyCode >= 65 && keyCode <=  90) || (keyCode >= 48 && keyCode <=  57)) { //Letters A-Z, Numbers 0-9
		return String.fromCharCode(keyCode);
	} else {
		return null;  
	}
}
	
function onlyNumeric(event) {
	var charKey;
	var specKey;
	var exp;

	if (event.type == 'paste') 
	{
		charKey = clipboardData.getData("Text");
	} 
	else if (event.type == 'keydown') 
	{
		charKey = getAlfaNumPressed(event);
		specKey = getSpecialKeyPressed(event);
		if (charKey == null && specKey == null) 
		{
			return false;
		} 
	}

	if (charKey != null) 
	{
		exp = /[^0-9]/;    //numeric part: accept digits only
		if (exp.test(charKey)) 
		{
			return false;
		}
	}
	return true;
}
	

// - VALIDATION --------------------------------------------------------------------------	
function validateEmail(str)
{
	//return str.match(/\b(^(\S+@).+((\..{2,4}))$)\b/gi);
	if(str.indexOf('@') > -1)
	{
		var firstPart = str.substr(0,str.indexOf('@'));
		if (firstPart.indexOf('.') == 0 || firstPart.indexOf('.') == (firstPart.length - 1))
		{
			return false;
		}
	}
	return str.match(/^[A-Z0-9.!#$%*\/?|^{}`~&'_\+\=\-]+@(?:[A-Z0-9-]+\.)+[A-Z]{2,4}$/i);
}