Autocomplete textbox with images and multiple selection using delimetre ','

Question

hi i want a jquery or simple javascript script than gives us a control of autocomplete textbox with images with multiple selection option using delemetre

for example i have to add two users of website into a group .. so i want that when i enter a first letter of a name user picture and name will be further i want that i could add multiple user at a time by using delimeter ','

i will use jquery and javascript first time so give me a brief example how should i use it and how should i add user name and picture into autocomplete dataset

thanx in advance