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

function trimLeft(str)
{
	var filter = new RegExp("^( )+");
	return str.replace(filter,'');
}

function trimRight(str)
{
	var filter = new RegExp("( )+$");
	return str.replace(filter,'');
}

function trim(str)
{
	return trimLeft(trimRight(str));
}