$.fn.focus_cursor = function( start, end )
{
	return this.each( function()
	{
		if ( this.setSelectionRange )
		{
			this.focus();
			this.setSelectionRange( start, end );
		}
		else if ( this.createTextRange )
		{
			var range = this.createTextRange();
			range.collapse( true );
			range.moveEnd( 'character', end );
			range.moveStart( 'character', start );
			range.select();
		}
	});
};