function opacity(id, opacStart, opacEnd, millisec) { 
    //speed for each frame 
    var speed = Math.round(millisec / 100); 
    var timer = 0; 
    
    //determine the direction for the blending, if start and end are the same nothing happens 
    if(opacStart > opacEnd) { 
	for(i = opacStart; i >= opacEnd; i--) { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        } 
	pipas=oculta(id);
	
    } else if(opacStart < opacEnd) { 
        pipas=muestra(id);
	for(i = opacStart; i <= opacEnd; i++) 
            { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        } 
    } 
} 




//change the opacity for different browsers 
function changeOpac(opacity, id) { 
    var object = document.getElementById(id).style; 
    object.opacity = (opacity / 100); 
    object.MozOpacity = (opacity / 100); 
    object.KhtmlOpacity = (opacity / 100); 
    object.filter = "alpha(opacity=" + opacity + ")"; 
}

//change the opacity for different browsers 
function changeOpac2(opacity, id) { 
    
    var object = document.getElementById(id).style; 
    pipas=muestra(id);
    object.opacity = (opacity / 100); 
    object.MozOpacity = (opacity / 100); 
    object.KhtmlOpacity = (opacity / 100); 
    object.filter = "alpha(opacity=" + opacity + ")"; 
}


function high(which2)
{
theobject=which2;

highlighting=setInterval("highlightit(theobject)",70);
}

function low(which2)
{
clearInterval(highlighting);
which2.filters.alpha.opacity=70;
}

function highlightit(cur2)
{
if(cur2.filters.alpha.opacity<100)
cur2.filters.alpha.opacity+=5
else if(window.highlighting)
clearInterval(highlighting)
}

function muestra(which2)
{
document.getElementById(which2).style.visibility="visible";
}

function oculta(which2)
{
document.getElementById(which2).style.visibility="hidden";
//a=changeOpac(0, which2);
}