// JScript File
var smallBeamCounter = 0;
var largeBeamCounter = 0;
var increase = true;

function BeamSignal(){

    var small = document.getElementById("SmallSignal");
    var large = document.getElementById("LargeSignal");

    ie5  = (document.all && document.getElementById);
    ns6 = (!document.all && document.getElementById);
    
    if(smallBeamCounter<100 && increase){
        smallBeamCounter += 10;
        
        if(ie5) small.filters.alpha.opacity = smallBeamCounter;
        if(ns6) small.style.MozOpacity = smallBeamCounter/100;           
    }else if(smallBeamCounter>0){
        smallBeamCounter -= 2;
        
        if(ie5) small.filters.alpha.opacity = smallBeamCounter;
        if(ns6) small.style.MozOpacity = smallBeamCounter/100;        
    }
    
    if(smallBeamCounter>50 && largeBeamCounter<100 && increase){
        largeBeamCounter += 10;
        
        if(ie5) large.filters.alpha.opacity = largeBeamCounter;
        if(ns6) large.style.MozOpacity = largeBeamCounter/100;    
            
        if(largeBeamCounter==100) increase = false;
    }else if(!increase){
        largeBeamCounter -= 2;
        
        if(ie5) large.filters.alpha.opacity = largeBeamCounter;
        if(ns6) large.style.MozOpacity = largeBeamCounter/100;
        if(largeBeamCounter==0) increase = true;
    }
    
    window.setTimeout("BeamSignal()", 50);
}