[SYMBOL][A][B][C][D][E][F][G][H][I][J][K][L][M][N][O][P][Q][R][S][T][U][V][W][X][Y][Z]ID attributes ID names ID selectors, style sheet rules identifiers if if conditionscookies, testing for enabled/disabled status for browser-specific linking methods, testing for object detection, using for object properties, testing for if/else iframe elements inserting and populating Image object imageschanging background images precaching server configuration and swapping (rollovers) img element implements construction, simulating @import rule importingbrowser- or operating system-specific style sheets external style sheets improving script performance including external HTML content incoming( ) function indexOf( ) method 2nd inequality operators initAnime( ) function initCircAnime( ) function initContextMenus( ) function 2nd initDHTMLAPI( ) function initDrag( ) function initExpand( ) function initExpMenu( ) function initiating processes after page loads initMenus( ) function initProgressBar( ) function initScrolbars( ) function initScroll( ) function initScroll( ) method initScrollers( ) function initSLAnime( ) function 2nd initXMLOutline( ) function 2nd innerHTML property 2nd innerText property insertAdjacentHTML( ) method 2nd insertBefore( ) method insertCell( ) method inserting and populating iframe elements insertRow( ) method intercapitalization system interface constructon Internet Explorer backward-compatible transition types CSS border coordinates detection DHTML events element content manipulation methods event objects modal/modeless windows new-style transition filters positioning elements v.6, forcing into standards-compatibility mode version detection windows object and isSupported( ) method