//Translucent scroller- By Dynamic Drive
//For full source code and more DHTML scripts, visit http://www.dynamicdrive.com
//This credit MUST stay intact for use

var scroller_width='180px'
var scroller_height='160px'
var bgcolor='#ffffff'
var pause=9000 //SET PAUSE BETWEEN SLIDE (3000=3 seconds)

var scrollercontent=new Array()
//Define scroller contents. Extend or contract array as needed
scrollercontent[0]='<b>Pressure Ratio</b> - The ratio of the mean total pressure exiting the compressor to the mean total pressure of the inlet when the engine is developing take-off thrust rating in ISA sea level static conditions.'
scrollercontent[1]='<b>NOx</b> - Oxides of nitrogen, defined as the sum of the amounts of nitric oxide (NO) and nitrogen dioxide (NO2) with mass calculated as if the NO where in the form of NO2.'
scrollercontent[2]='<b>Engine Pressure Ratio</b> - The ratio of the mean total pressure at the last compressor discharge plane of the compressor to the mean total pressure at the compressor entry plane, when the engine is developing its take-off thrust rating (in ISA sea-level static conditions).'
scrollercontent[3]='<b>Emission Index</b> - The mass of material or number of particles emitted per burnt mass of fuel (for NOx in g of equivalent NO2 per kg of fuel; for hydrocarbons in g of CH4 per kg of fuel)'


////NO need to edit beyond here/////////////

var ie4=document.all
var dom=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1

if (ie4||dom)
document.write('<div style="position:relative;width:'+scroller_width+';height:'+scroller_height+';overflow:hidden"><div id="canvas0" style="position:absolute;background-color:'+bgcolor+';width:'+scroller_width+';height:'+scroller_height+';top:'+scroller_height+';filter:alpha(opacity=20);-moz-opacity:0.2;"></div><div id="canvas1" style="position:absolute;background-color:'+bgcolor+';width:'+scroller_width+';height:'+scroller_height+';top:'+scroller_height+';filter:alpha(opacity=20);-moz-opacity:0.2;"></div></div>')
else if (document.layers){
document.write('<ilayer id=tickernsmain visibility=hide width='+scroller_width+' height='+scroller_height+' bgColor='+bgcolor+'><layer id=tickernssub width='+scroller_width+' height='+scroller_height+' left=0 top=0>'+scrollercontent[0]+'</layer></ilayer>')
}

var curpos=scroller_height*(1)
var degree=10
var curcanvas="canvas0"
var curindex=0
var nextindex=1

function moveslide(){
if (curpos>0){
curpos=Math.max(curpos-degree,0)
tempobj.style.top=curpos+"px"
}
else{
clearInterval(dropslide)
if (crossobj.filters)
crossobj.filters.alpha.opacity=100
else if (crossobj.style.MozOpacity)
crossobj.style.MozOpacity=1
nextcanvas=(curcanvas=="canvas0")? "canvas0" : "canvas1"
tempobj=ie4? eval("document.all."+nextcanvas) : document.getElementById(nextcanvas)
tempobj.innerHTML=scrollercontent[curindex]
nextindex=(nextindex<scrollercontent.length-1)? nextindex+1 : 0
setTimeout("rotateslide()",pause)
}
}

function rotateslide(){
if (ie4||dom){
resetit(curcanvas)
crossobj=tempobj=ie4? eval("document.all."+curcanvas) : document.getElementById(curcanvas)
crossobj.style.zIndex++
if (crossobj.filters)
document.all.canvas0.filters.alpha.opacity=document.all.canvas1.filters.alpha.opacity=20
else if (crossobj.style.MozOpacity)
document.getElementById("canvas0").style.MozOpacity=document.getElementById("canvas1").style.MozOpacity=0.2
var temp='setInterval("moveslide()",50)'
dropslide=eval(temp)
curcanvas=(curcanvas=="canvas0")? "canvas1" : "canvas0"
}
else if (document.layers){
crossobj.document.write(scrollercontent[curindex])
crossobj.document.close()
}
curindex=(curindex<scrollercontent.length-1)? curindex+1 : 0
}

function resetit(what){
curpos=parseInt(scroller_height)*(1)
var crossobj=ie4? eval("document.all."+what) : document.getElementById(what)
crossobj.style.top=curpos+"px"
}

function startit(){
crossobj=ie4? eval("document.all."+curcanvas) : dom? document.getElementById(curcanvas) : document.tickernsmain.document.tickernssub
if (ie4||dom){
crossobj.innerHTML=scrollercontent[curindex]
rotateslide()
}
else{
document.tickernsmain.visibility='show'
curindex++
setInterval("rotateslide()",pause)
}
}

if (ie4||dom||document.layers)
window.onload=startit