function show_hide_masthead_inner(a,b,c){if(document.getElementById(a).src.replace("%20"," ").indexOf("images/"+c+"_up")>0){slideup(b);document.getElementById(a).src="images/"+c+"_dwn.gif"}else{slidedown(b);document.getElementById(a).src="images/"+c+"_up.gif"}}var timerlen=5,slideAniLen=550,timerID=[],startTime=[],obj=[],endHeight=[],moving=[],dir=[];function slidedown(a){if(!moving[a])if(document.getElementById(a).style.display=="none"){moving[a]=true;dir[a]="down";startslide(a)}}
function slideup(a){if(!moving[a])if(document.getElementById(a).style.display!="none"){moving[a]=true;dir[a]="up";startslide(a)}}function startslide(a){obj[a]=document.getElementById(a);endHeight[a]=parseInt(obj[a].style.height);startTime[a]=(new Date).getTime();if(dir[a]=="down")obj[a].style.height="1px";obj[a].style.display="block";timerID[a]=setInterval("slidetick('"+a+"');",timerlen)}
function slidetick(a){var b=(new Date).getTime()-startTime[a];if(b>slideAniLen)endSlide(a);else{b=Math.round(b/slideAniLen*endHeight[a]);if(dir[a]=="up")b=endHeight[a]-b;obj[a].style.height=b+"px"}}function endSlide(a){clearInterval(timerID[a]);if(dir[a]=="up")obj[a].style.display="none";obj[a].style.height=endHeight[a]+"px";delete moving[a];delete timerID[a];delete startTime[a];delete endHeight[a];delete obj[a];delete dir[a]};