on
英[ɒn] 美[ɑ:n]
prep. (indicating direction) to; (indicating object) to; (indicating position) on...; (indicating time) at the time of...
adv. (put, wear, connect) on; forward, (continue) go on
adj. active situation, state ; in use; happening; planned
unload
英[ˌʌnˈləʊd] US[ˌʌnˈloʊd]
vt.Unload; remove Burden; pour; deal with, dump
vi. Unload goods or other burdens; unload bullets; [Business] sell (securities)
Third person singular: unloads Present participle: unloading Past tense: unloaded past participle: unloaded
javascript onunload attribute syntax
Function:Occurs when the user exits the page.
Syntax:onunload="SomeJavaScriptCode"
Parameters:SomeJavaScriptCode Required. Specifies the JavaScript to be executed when this event occurs.