// OpacChanger = function () {
//    var opacity = 0;
//    var opacStart= 0;
//    var opacEnd= 0;
//    var changeOpac = function () {
//        if (opacStart >=  opacEnd) opacStart--;
//        if (opacStart <=  opacEnd) opacStart++;
//	var object = document.getElementById('activeDiv_'+id).style;
//	object.opacity = (opacStart / 100);
//	object.filter = "alpha(opacity=" + opacStart + ")";
//    }
//}
function OpacChanger()  {
}
OpacChanger.prototype = {
      opacity : 0,
      opacStart: 0,
      opacEnd: 0,
      changeOpac : function (id) {
        if (this.opacStart >=  this.opacEnd) this.opacStart-=2;
        if (this.opacStart <=  this.opacEnd) this.opacStart+=2;
	var object = document.getElementById('activeDiv_'+id).style;
	object.opacity = (this.opacStart / 100);
	object.filter = "alpha(opacity=" + this.opacStart + ")";
    }
}
          function isIE()
          {
              return /msie/i.test(navigator.userAgent) && !/opera/i.test(navigator.userAgent);
          }
function opacity(id, opacStart, opacEnd, millisec) {

    if (!isIE()) {
        var object = document.getElementById('activeDiv_'+id).style;
	var object2 = document.getElementById('inactiveDiv_'+id).style;
        if (opacStart == 100)
            if (object2.display=="none") object2.display="block";
            else object2.display="none";
        if (object.display=="none") object.display="block";
        else object.display="none";

        var oc = new OpacChanger();
        oc.opacStart = opacStart;
        oc.opacEnd = opacEnd;
	
        var Cid = setInterval(function() {oc.changeOpac(id);},(1/100));
        setTimeout("clearInterval("+Cid+");",millisec*2);
	if (opacStart == 0)
            if (object2.display=="none") object2.display="block";
            else object2.display="none";
    }
}
function isDefined(variable) {
    return (typeof(window[variable])=="undefined")?false: true;
}