function leftlinkover(id) { document.getElementById("leftRow"+id).className= "menubgt"; } function leftlinkout(id) { document.getElementById("leftRow"+id).className= "menubg"; } function leftlinkoverr(id) { document.getElementById("sleftRow"+id).className= "menubgt"; } function leftlinkoutr(id) { document.getElementById("sleftRow"+id).className= "menubgl"; } window.onload=init; var d=document; var expander; var lContainer; var currentTop=0; var zInterval = null; var direction; var startTop=0; var scrollRate=6; var scrollTick=0; var listExpand=true; var listHeight=60; var isExpanded=false; var MAX_SCROLL_TICK=4; var LI_PADDING=2; var LI_HEIGHT=10; var MAX_LIST_HEIGHT=300; var MIN_LIST_HEIGHT=60; var REBOUND = -4; var FAST_EXPAND=5; var SLOW_EXPAND=1; var SPEED_TRANSITION=20; function init() { if(!d.getElementById)return; up=d.getElementById("upArrow"); down=d.getElementById("downArrow"); down.onclick=function(){scrollObjects(0);} up.onclick=function(){scrollObjects(1);} expander=d.getElementById("changeSize"); expander.onclick=function(){if(!isExpanded)isExpanded=true;changeListSize(); } lContainer = d.getElementById("listContainer"); d.getElementById("nContainer").style.height=MIN_LIST_HEIGHT+"px"; } function scrollObjects(dir) { if(zInterval)return; if(isExpanded)return; if((!dir && currentTop<=-240) || (dir && currentTop==0))return; direction=dir; zInterval=setInterval("animate()",20); } function animate() { if(!direction) { currentTop-=scrollRate; } else { currentTop+=scrollRate; } scrollTick++; if(scrollTick>=MAX_SCROLL_TICK) { scrollRate--; scrollTick=0; } lContainer.style.top=currentTop+"px"; if(scrollRate<=REBOUND) { clearInterval(zInterval); zInterval=null; startTop=currentTop; scrollTick=0; scrollRate=6; } } function changeListSize() { listExpand=listExpand?false:true; clearInterval(zInterval); zInterval=setInterval("expandList()",20); } function expandList() { if(!listExpand) { if(listHeight=MAX_LIST_HEIGHT && currentTop>=0) { clearInterval(zInterval); zInterval=null; expander.style.backgroundImage="url(minus.gif)"; currentTop=0; isExpanded=true; } } else { if(listHeight>MIN_LIST_HEIGHT+SPEED_TRANSITION) { listHeight-=FAST_EXPAND; } else { listHeight-=SLOW_EXPAND; } document.getElementById("nContainer").style.height=listHeight+"px"; if(listHeight<=MIN_LIST_HEIGHT) { clearInterval(zInterval); zInterval=null; expander.style.backgroundImage="url(plus.gif)"; isExpanded=false; } } }