Can't insert picture into post with Image uploader

I created Theme options for my WordPress Theme. And I manged create Image Uploader popup and managed successfully insert in to field also (image URL). here is script I use.

jQuery('#brochure_button').click(function() {
	formfield = jQuery(this).prev().attr('name');
	tb_show('', 'media-upload.php?type=image&TB_iframe=true');
	return false;
	});

	window.send_to_editor = function(html) {
	imgurl = jQuery(html).attr('href');
	// I then called the name and joined with # for the id.
	jQuery("#"+formfield).val(imgurl);
	tb_remove();
	}

in function.php

function my_admin_scripts() {
		wp_enqueue_script('media-upload');
		wp_enqueue_script('thickbox');
		wp_register_script('my-upload', get_bloginfo('template_url').'/scripts/admin_scripts.js', array('jquery','media-upload','thickbox'));
		wp_enqueue_script('my-upload');
	}

	function my_admin_styles() {
		wp_enqueue_style('thickbox');
	}		

	add_action('admin_print_scripts', 'my_admin_scripts');
	add_action('admin_print_styles', 'my_admin_styles');

but Now when I upload image to a post or page using normal Image Uploader I can’t insert the picture into content area of that post or page. I get the button but once I clicked it popup goes blank and it’s not closing even.

Any idea how to fix this.

Thanks,
nalin