jQuery script to choose the mouse cursor position when I click on input field

jquery-choose-mouse-position.js

//http://www.narga.net/making-awesome-forms-inline-labels-with-jquery
$.fn.setCursorPosition = function(pos) {
		if ($(this).get(0).setSelectionRange) {
			$(this).get(0).setSelectionRange(pos, pos);
		} else if ($(this).get(0).createTextRange) {
		var range = $(this).get(0).createTextRange();
		range.collapse(true);
		range.moveEnd('character', pos);
		range.moveStart('character', pos);
		range.select();
		}
	}