customized twitter share by javascript without twitter api

gistfile1.js

//@requires jQuery to find width and height of window and creating querystring

var href = 'http://twitter.com/share';

var option = {
    url: 'your location',
    text: 'your text'
};

var width = 575, 
    height = 400, 
    left = ($(window).width() - width) / 2, 
    top = ($(window).height() - height) / 2, 
    url = $(this).attr('href'), 
    opts = 'status=1' 
         + ',width=' + width 
	 + ',height=' + height 
	 + ',top=' + top 
	 + ',left=' + left;
		 	
window.open(href + '?' + $.param(option), 'Twitter Share', opts);