jQuery to fetch images from current page

fetchImage.js

/*
* curator: Mayur Pipaliya [ mayur {at} pipaliya {dot} com ]
* copyleft (ɔ) distribute, alter and use at your own risk.
* apply necessary alternation accordingly.
*/

// Dynamically loading jQuery if it doesn't already.
   if (typeof jQuery == 'undefined') {
     document.write('<scr'+'ipt type="text/javascript" src="http://ajax.googleapis.com /ajax/libs/jquery/1.7.1/jquery.min.js">'+'</scr'+'ipt>');
  }


// Parsing images and adding their links in DIV
function listImages(){
	var listofImages = '';
	var tmpImgURL = 'null';
	    

	$('*').each(function(){ 
		var backImg;

	    if ($(this).is('img')) {
	        		tmpImgURL = $(this).attr('src');
					if (!tmpImgURL.toLowerCase().indexOf("rgb") >= 0)
						listofImages = listofImages + "<li><a download style='margin-bottom:4px;' href='" + tmpImgURL + "'>" + tmpImgURL + "</a></li>";
					console.log(tmpImgURL);
	    } else {
	      
	        backImg = $(this).css('background-image');
	        if (backImg != 'none')
	        { 
	        		tmpImgURL = backImg.substring(4, backImg.length-1); 
					if (!tmpImgURL.toLowerCase().indexOf("rgb") >= 0)
						listofImages = listofImages + "<li><a download style='margin-bottom:4px;' href='" + tmpImgURL + "'>" + tmpImgURL + "</a></li>";
					console.log(tmpImgURL);
	        }
	    }


	    
	});

	$("#objSurmi").append("<br><b>List of images </b><br><br><ol>" + listofImages + "</ol>");
	$('ol > li').css({'display': 'list-item', 'list-style-position':'inside'});
}


// function for centering DIV element
jQuery.fn.center = function () {
    this.css("position","absolute");
    this.css("top", Math.max(0, (($(window).height() - $(this).outerHeight()) / 2) + 
                                                $(window).scrollTop()) + "px");
    this.css("left", Math.max(0, (($(window).width() - $(this).outerWidth()) / 2) + 
                                                $(window).scrollLeft()) + "px");
    return this;
}

// adding empty DIV element.
jQuery('body').prepend(
                "<br><hr><div id='objSurmi'><br><a hred='javascript:void(0)' onClick='listImages();return false;'>Click to parse Images</a><br>" //create this html
                        + "</div><hr><br><br>");

// Beautifying DIV
$('#objSurmi').css({"background": "url(http://subtlepatterns.com/patterns/mooning.png)",
					"color":"green","line-height":"18px","font-family":"'Open Sans', sans-serif",
					"width":"500px","min-height": "400px",
					"z-index": "2147483647", "position":"absolute",
					"border-radius": "15px",
					"margin": "3px 3px 3px 3px",
					"padding": "5px 5px 5px 5px"});

// Doesn't seem to be in effect due to some reasons.
$('ol > li').css({'display': 'list-item', 'list-style-position':'inside'});

// Applying center fn on DIV
$("#objSurmi").center();