var headerImgs = Array();
	headerImgs[0]="header-img/header1.jpg";
	headerImgs[1]="header-img/header10.jpg";
	headerImgs[2]="header-img/header11.jpg";
	headerImgs[3]="header-img/header12.jpg";
	headerImgs[4]="header-img/header13.jpg";
	headerImgs[5]="header-img/header14.jpg";
	headerImgs[6]="header-img/header15.jpg";
	headerImgs[7]="header-img/header16.jpg";
	headerImgs[8]="header-img/header17.jpg";
	headerImgs[9]="header-img/header3.jpg";
	headerImgs[10]="header-img/header4.jpg";
	headerImgs[11]="header-img/header5.jpg";
	headerImgs[12]="header-img/header6.jpg";
	headerImgs[13]="header-img/header7.jpg";
	headerImgs[14]="header-img/header8.jpg";
	headerImgs[15]="header-img/header9.jpg";
	
function precarga() { 
	if (!document.images) return; 
	var imageArray = new Array(); 
	var arguments = precarga.arguments; 
	for (var i = 0; i < arguments.length; i++) { 
		imageArray[i] = new Image();
		imageArray[i].src = arguments[i];		
	} 
}

function setOpacity(obj, opacity) {
  opacity = (opacity == 100)?99.999:opacity;

  if (obj != null) {
    // IE/Win
    obj.style.filter = "alpha(opacity="+opacity+")";

    // Safari<1.2, Konqueror
    obj.style.KHTMLOpacity = opacity/100;

    // Older Mozilla and Firefox
    obj.style.MozOpacity = opacity/100;

    // Safari 1.2, newer Firefox and Mozilla, CSS3
    obj.style.opacity = opacity/100;
  }
}

function mifadeOut(objId,opacity) {	
	if (document.getElementById) {
		obj = document.getElementById(objId);
		if(opacity >= 0) {
			setOpacity(obj, opacity);
			opacity -= 10;
			window.setTimeout("mifadeOut('"+objId+"',"+opacity+")", 70);
		} else {
			if('RANDOM' == 'SECUENCIAL'){
				obj.style.backgroundImage = "url('"+headerImgs[headerCont]+"')";			
				mifadeIn(objId,opacity);
				headerCont = (headerCont + 1)%headerImgs.length;
				setTimeout("mifadeOut('"+objId+"', 100)", 4000);
			} else if('RANDOM' == 'RANDOM'){
				obj.style.backgroundImage = "url('"+headerImgs[headerCont]+"')";			
				mifadeIn(objId,opacity);
				var tempCont = headerCont;
				while(tempCont == headerCont){
					tempCont = Math.floor(headerImgs.length*Math.random());
				}
				headerCont = tempCont;
				setTimeout("mifadeOut('"+objId+"', 100)", 10000);
			}			
		}
	}
}

function mifadeIn(objId,opacity) {
  if (document.getElementById) {
    obj = document.getElementById(objId);
    if (opacity <= 100) {
	  setOpacity(obj, opacity);
      opacity += 10;
      window.setTimeout("mifadeIn('"+objId+"',"+opacity+")", 70);
    }
  }
}

headerCont = Math.floor(headerImgs.length*Math.random());

setTimeout("mifadeOut('header-img', 10)", 0);