function setCaretTo(element, start, end)
	{
		if(element.createTextRange)
		{
			var range = element.createTextRange();
			range.moveStart('character', start);
			range.moveEnd('character', (end || start));
			range.select();
		}
		else if(element.selectionStart)
		{
			element.focus();
			element.setSelectionRange(start, (end || start));
		}
	}
Destroy this gridster by removing any sign of its presence, making it easy to avoid memory leaks

@method destroy
@return {undefined}