How do I change/replace a flash object with jquery or pure javascript?

$(enclosing div).html('');
$(enclosing div).html(<object>My New Object</object>);

$('#mydiv').empty();

function removeObjectInIE(el) {
    var jbo = (typeof(el) == "string" ? getElementById(el) : el);
    if (jbo) {
        for (var i in jbo) {
            if (typeof jbo[i] == "function") {
    	        jbo[i] = null;
            }
        }
        jbo.parentNode.removeChild(jbo);
    }
}

function removeSWF(id) {
    var obj = (typeof(id) == "string" ? getElementById(id) : id);
    if(obj){
        if (obj.nodeName == "OBJECT" || obj.nodeName == "EMBED") {
            if (ua.ie && ua.win) {
    	        if (obj.readyState == 4) {
    		        removeObjectInIE(id);
    	        }
    	        else {
    	            $(document).ready(function() { removeObjectInIE(id); });
    	        }
            }
            else {
    	        obj.parentNode.removeChild(obj);
            }
        }else if(obj.childNodes && obj.childNodes.length > 0){
            for(var i=0;i<obj.childNodes.length;i++){
                removeSWF(obj.childNodes[i]);
            }
        }
    }
}