replace query variables within static html with javascript and jQuery as selector

script.js

// http://jsfiddle.net/96q4m/17/ - old

// simulating GET variables
if(window.location.search.indexOf('test') < 0) window.location.search = window.location.search+'?test=123&img=https%3A%2F%2Fdrupal.org%2Ffiles%2Ftest-all-the-things.jpg';
// remove everything above this line - stop removing after


// closure compiled:
$(function(){function a(a){return decodeURIComponent(a.replace(b," "))}for(var b=/\+/g,c=/([^&=]+)=?([^&]*)/g,d=window.location.search.substring(1);y=c.exec(d);)$("#tpl-"+a(y[1])).length&&("IMG"!==$("#tpl-"+a(y[1]))[0].tagName?$("#tpl-"+a(y[1])).html(a(y[2])):$("#tpl-"+a(y[1])).attr("src",a(y[2])))});


/* clean code
$(function() {
    var q = /\+/g,
        u = /([^&=]+)=?([^&]*)/g,
        r = window.location.search.substring( 1 ),
        e = function( s ) {
            return decodeURIComponent( s.replace( q, ' ' ) );
        };
    while( y = u.exec( r ) ) {
        if( $( '#tpl-' + e( y[1] ) ).length ) {
        	if( $('#tpl-' + e( y[1] ) )[0].tagName !== 'IMG' ) {
	            $( '#tpl-' + e( y[1] ) ).html( e( y[2] ) )
    	    } else {
        	    $( '#tpl-' + e( y[1] ) ).attr( 'src', e( y[2] ) )
            }
        }
    }
});
*/

test.html

<div id="tpl-test"></div>
<img id="tpl-img" />