function ChangeOpacity(objid , opacity)
{
    var obj = document.getElementById(objid);
    if(!obj) return;
    
    obj.style.opacity = (opacity / 100);
    obj.style.MozOpacity = (opacity / 100);
    obj.style.KhtmlOpacity = (opacity / 100);
    obj.style.filter = "alpha(opacity=" + opacity + ")";
    
    if(opacity == 0)
    {
        obj.style.display = 'none';
    }
    else
    {
        obj.style.display = 'block';
    }
}

function OpacityEffect(id, opacStart, opacEnd, millisec) { 

    var speed = Math.round(millisec / 100); 
    var timer = 0; 

    if(opacStart > opacEnd) { 
        for(i = opacStart; i >= opacEnd; i--) { 
            setTimeout("ChangeOpacity('" + id + "'," + i + ")",(timer * speed)); 
            timer++; 
        } 
    } else if(opacStart < opacEnd) { 
        for(i = opacStart; i <= opacEnd; i++) 
            { 
            setTimeout("ChangeOpacity('" + id + "'," + i + ")",(timer * speed)); 
            timer++; 
        } 
    } 
}