function in_array(needle, haystack, strict) {
    var found = false, key, strict = !!strict;
    for (key in haystack) { if ((strict && haystack[key] === needle) || (!strict && haystack[key] == needle)) { found = true; break; } } 
    return found;
}

function trim (str, charlist) {
    var whitespace, l = 0, i = 0;
    str += '';

    if (!charlist) {
        // default list
        whitespace = " \n\r\t\f\x0b\xa0\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u2028\u2029\u3000";
    } else {
        // preg_quote custom list
        charlist += '';
        whitespace = charlist.replace(/([\[\]\(\)\.\?\/\*\{\}\+\$\^\:])/g, '\$1');
    }
    
    l = str.length;
    for (i = 0; i < l; i++) {
        if (whitespace.indexOf(str.charAt(i)) === -1) {
            str = str.substring(i);
            break;
        }
    }
    
    l = str.length;
    for (i = l - 1; i >= 0; i--) {
        if (whitespace.indexOf(str.charAt(i)) === -1) {
            str = str.substring(0, i + 1);
            break;
        }
    }
    
    return whitespace.indexOf(str.charAt(0)) === -1 ? str : '';
}

function getElement(elementId)
{
	var element;

	if (document.all)
		element = document.all[elementId];
	else if (document.getElementById)
		element = document.getElementById(elementId);

	return element;
}

function mouseX(evt)
{
	if (evt.pageX) return evt.pageX;
	else if (evt.clientX)
		return evt.clientX + (document.documentElement.scrollLeft ?
					document.documentElement.scrollLeft :
					document.body.scrollLeft);
	else return null;
}

function mouseY(evt)
{
	if (evt.pageY) return evt.pageY;
	else if (evt.clientY)
		return evt.clientY + (document.documentElement.scrollTop ?
					document.documentElement.scrollTop :
					document.body.scrollTop);
	else return null;
}

var IE = false;
var NN = false;

if(navigator.appName=="Microsoft Internet Explorer")
{
	IE=true;
}

if(navigator.appName=="Netscape")
{
	NN=true;
}

function keepFocus()
{
	window.focus();
        mytimer = setTimeout('keepFocus()',500);
}

function validateEmail(address) 
{
	var reg = /^([A-Za-z0-9_'\-\.\/])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	if(reg.test(address) == false) 
	{
		return false;
	}

	return true;
}