var DHTML = 
(document.getElementById || document.all || document.layers); 
if (!DHTML) { 
alert('Your browser is not capable of displaying DHTML'); 
} 

function getObj(name) { 
if (document.getElementById) { 
this.obj = document.getElementById(name); 
this.style = document.getElementById(name).style; 
} else 
if (document.all) { 
this.obj = document.all[name]; 
this.style = document.all[name].style; 
} else 
if (document.layers) { 
this.obj = document.layers[name]; 
this.style = document.layers[name]; 
} 
} 

function visib(objName, flag) { // triggers layer visibility 
x = new getObj(objName); 
x.style.display = (flag) ? 'block' : 'none';
x.style.visibility = (flag) ? 'visible' : 'hidden'; 
} 

var fadeOn = false; 
function setFade(switchFade) {// Fade switch function 
if ( !fadeOn ) { 
prepLyr(slides[curImg], true); 
} else { // No fade 
stopFade(); 
for ( var i = 0; i < 8; i++ ) { 
prepLyr(slides[i], true); 
if ( slides[i] != slides[curImg] ) 
visib(slides[i], false); 
} 
} 
fadeOn = switchFade; 
} 

var curImg = 0; // index of the array entry 
var lastImg = 0; 
function changeSlide ( change ) { 
if (!DHTML) return; 
curImg += change; 
if ( curImg < 0 ) curImg = slides.length-1; 
else 
if ( curImg >= slides.length ) curImg = 0; 
if ( fadeOn ) { 
firstFade = true; 
prepLyr(slides[lastImg], true ); 
fadeLayer(slides[lastImg], 10, 50); 
} else { 
visib(slides[lastImg], false); 
visib(slides[curImg], true); 
} 
lastImg = curImg; 
} 

var clipTop, clipWidth, clipBottom, lyrheight; 
var time,amount,theTime,middle; 
var slideSize = new Array() 

function prepLyr(lyr, vis) { 
if (!DHTML) return; 
x = new getObj( lyr ); 
if (document.layers) { 
if ( !slideSize[lyr] ) { 
lyrheight = x.style.clip.bottom; 
clipWidth = x.style.clip.right; 
slideSize[lyr] = lyrheight + 'x' + clipWidth; 
} else { 
lyrheight = parseInt(slideSize[lyr]); 
clipWidth = slideSize[lyr].substr( 
slideSize[lyr].indexOf('x')+1); 
} 
if ( vis ) { 
clipTop = 0; 
middle = Math.round(lyrheight/2); 
clipBottom = lyrheight; 
} else { 
middle = Math.round(lyrheight/2); 
clipBottom = middle; 
clipTop = middle; 
} 
x.style.clip.top = clipTop; 
x.style.clip.left = 0; 
x.style.clip.right = clipWidth; 
x.style.clip.bottom = clipBottom; 
x.style.display = 'block'; 
x.style.visibility = 'show'; 
} else 
if (document.getElementById || document.all) { 
lyrheight = x.obj.offsetHeight; 
clipWidth = x.obj.offsetWidth; 
if ( vis ) { 
clipTop = 0; 
middle = Math.round(lyrheight/2); 
clipBottom = lyrheight; 
} else { 
middle = Math.round(lyrheight/2); 
clipBottom = middle; 
clipTop = middle; 
} 
x.style.clip = 
'rect('+clipTop+' '+clipWidth+' '+ clipBottom +' 0)'; 
visib(lyr, true); 
} 
} 

function fadeLayer(layername, amt, tim) { 
if (!DHTML) return; 
thelayer = new getObj( layername ); 
if (!thelayer) return; 
amount = amt; 
theTime = tim; 
realFade(); 
} 

function stopFade() { 
if (time) clearTimeout(time); 
} 

function realFade() { 
clipTop += amount; 
clipBottom -= amount; 
if (clipTop < 0 || clipBottom > lyrheight || clipTop > middle) { 
if ( clipTop > middle ) thelayer.style.visibility = 'hidden'; 
if ( firstFade ) nextFade(); 
return; 
} 
if (document.getElementById || document.all) { 
clipstring = 'rect('+clipTop+' '+clipWidth+' '+clipBottom+' 0)' 
thelayer.style.clip = clipstring; 
} else 
if (document.layers) { 
thelayer.style.clip.top = clipTop; 
thelayer.style.clip.bottom = clipBottom; 
} 
time = setTimeout('realFade()',theTime); 
} 

var firstFade = true; 
function nextFade() { 
firstFade = false; 
prepLyr(slides[curImg], false); 
fadeLayer(slides[curImg], -10, 50); 
}