var opa_m = 0;
var ver=1;

if (objUA.isNetscape && objUA.appVersion > 0 && objUA.appVersion < 6) {
  ver=0;
}

if (ver==1) {
  var b_an  = new Array();
	var b_an2  = new Array();
  var b_aus = new Image();
	b_aus.src = "img/leer.gif";
}


function initImgs(typ, hlImg, imgPath){
	if (ver==1) {
		var max = hlImg.length;
		for (i=0;i <= max;i++) {
			if(typ==''){
				b_an[i]  = new Image();
				b_an[i].src = imgPath + hlImg[i] + ".gif";
			}
			else{
				b_an2[i]  = new Image();
				b_an2[i].src = imgPath + hlImg[i] + ".gif";				
			}
		}
	}
}

function an(mname, i){
	if (ver==1) {
		document.images[mname].src=b_an[i].src;
		fadeOpacity(document.images[mname], 1, i , 0);
	}
   return true;
}

function aus(mname, i){
  if (ver==1) { 
		//document.images[mname].src=b_aus.src;
		fadeOpacity(document.images[mname], -1 , i, 100);
  }
	return true;
}

function an2(mname, i){
	if (ver==1) {
		document.images[mname].src=b_an2[i].src;
		fadeOpacity(document.images[mname], 1, i , 0);
	}
   return true;
}

function aus2(mname, i){
  if (ver==1) { 
		//document.images[mname].src=b_aus.src;
		fadeOpacity(document.images[mname], -1 , i, 100);
	}	
  return true;
}

function fadeOpacity(obj, mod, i, opa) {
		
		setOpacity(obj, opa);
		if(mod==1){
			opa += 10;
		}
		else{
			opa -= 10;
		}		
		if(opa >= 0 && opa <= 100){
			setTimeout(function() {fadeOpacity(obj, mod, i, opa); }, 20);	
		}	
		else{
			opa_m = opa;
		}

}

function setOpacity(obj, opa) {
    obj.style.opacity = opa/100;
    obj.style.MozOpacity = opa/100;
    obj.style.KhtmlOpacity = opa/100;
    obj.style.filter = 'alpha(opacity=' + opa + ')';
}