whole_func_string: function do_script(chain_opts,script_obj,chain_group,preload_this_script) {
  			var registry_item,
  				registry_items,
  				ready_cb = function(){ script_obj.ready_cb(script_obj,function(){ execute_preloaded_script(chain_opts,script_obj,registry_item); }); },
  				finished_cb = function(){ script_obj.finished_cb(script_obj,chain_group); }
  			;
  
  			script_obj.src = canonical_uri(script_obj.src,chain_opts[_BasePath]);
  			script_obj.real_src = script_obj.src +
  				// append cache-bust param to URL?
  				(chain_opts[_CacheBust] ? ((/\?.*$/.test(script_obj.src) ? "&_" : "?_") + ~~(Math.random()*1E9) + "=") : "")
  			;
  
  			if (!registry[script_obj.src]) registry[script_obj.src] = {items:[],finished:false};
  			registry_items = registry[script_obj.src].items;
  
  			// allowing duplicates, or is this the first recorded load of this script?
  			if (chain_opts[_AllowDuplicates] || registry_items.length == 0) {
  				registry_item = registry_items[registry_items.length] = {
  					ready:false,
  					finished:false,
  					ready_listeners:[ready_cb],
  					finished_listeners:[finished_cb]
  				};
  
  				request_script(chain_opts,script_obj,registry_item,
  					// which callback type to pass?
  					(
  					 	(preload_this_script) ? // depends on script-preloading
  						function(){
  							registry_item.ready = true;
  							for (var i=0; i<registry_item.ready_listeners.length; i++) {
  								registry_item.ready_listeners[i]();
  							}
  							registry_item.ready_listeners = [];
  						} :
  						function(){ script_executed(registry_item); }
  					),
  					// signal if script-preloading should be used or not
  					preload_this_script
  				);
  			}
  			else {
  				registry_item = registry_items[0];
  				if (registry_item.finished) {
  					finished_cb();
  				}
  				else {
  					registry_item.finished_listeners.push(finished_cb);
  				}
  			}
  		}
func_code_string: function do_script(chain_opts,script_obj,chain_group,preload_this_script) {
  			var registry_item,
  				registry_items,
  				ready_cb = function(){ script_obj.ready_cb(script_obj,function(){ execute_preloaded_script(chain_opts,script_obj,registry_item); }); },
  				finished_cb = function(){ script_obj.finished_cb(script_obj,chain_group); }
  			;
  
  			script_obj.src = canonical_uri(script_obj.src,chain_opts[_BasePath]);
  			script_obj.real_src = script_obj.src +
  				// append cache-bust param to URL?
  				(chain_opts[_CacheBust] ? ((/\?.*$/.test(script_obj.src) ? "&_" : "?_") + ~~(Math.random()*1E9) + "=") : "")
  			;
  
  			if (!registry[script_obj.src]) registry[script_obj.src] = {items:[],finished:false};
  			registry_items = registry[script_obj.src].items;
  
  			// allowing duplicates, or is this the first recorded load of this script?
  			if (chain_opts[_AllowDuplicates] || registry_items.length == 0) {
  				registry_item = registry_items[registry_items.length] = {
  					ready:false,
  					finished:false,
  					ready_listeners:[ready_cb],
  					finished_listeners:[finished_cb]
  				};
  
  				request_script(chain_opts,script_obj,registry_item,
  					// which callback type to pass?
  					(
  					 	(preload_this_script) ? // depends on script-preloading
  						function(){
  							registry_item.ready = true;
  							for (var i=0; i<registry_item.ready_listeners.length; i++) {
  								registry_item.ready_listeners[i]();
  							}
  							registry_item.ready_listeners = [];
  						} :
  						function(){ script_executed(registry_item); }
  					),
  					// signal if script-preloading should be used or not
  					preload_this_script
  				);
  			}
  			else {
  				registry_item = registry_items[0];
  				if (registry_item.finished) {
  					finished_cb();
  				}
  				else {
  					registry_item.finished_listeners.push(finished_cb);
  				}
  			}
  		}
func_documentation_string: process the script request setup