function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

function insertAfter(newElement,targetElement) {
  var parent = targetElement.parentNode;
  if (parent.lastChild == targetElement) {
    parent.appendChild(newElement);
  } else {
    parent.insertBefore(newElement,targetElement.nextSibling);
  }
}

function addClass(element,value) {
  if (!element.className) {
    element.className = value;
  } else {
    newClassName = element.className;
    newClassName+= " ";
    newClassName+= value;
    element.className = newClassName;
  }
}

function highlightPage() {
  if (!document.getElementsByTagName) return false;
  if (!document.getElementById) return false;
  if (!document.getElementById("navigation")) return false;
  var nav = document.getElementById("navigation");
  var links = nav.getElementsByTagName("a");
  for (var i=0; i<links.length; i++) {
    var linkurl = links[i].getAttribute("href");
    var currenturl = window.location.href;
    if (currenturl.indexOf(linkurl) != -1) {
      links[i].className = "here";
      var linktext = links[i].lastChild.nodeValue.toLowerCase();
      document.body.setAttribute("id",linktext);
    }
  }
}

addLoadEvent(highlightPage);


/* cebollas */
function moveElement(elementID,final_x,final_y,interval) {
  if (!document.getElementById) return false;
  if (!document.getElementById(elementID)) return false;
  var elem = document.getElementById(elementID);
  if (elem.movement) {
    clearTimeout(elem.movement);
  }
  if (!elem.style.left) {
    elem.style.left = "0px";
  }
  if (!elem.style.top) {
    elem.style.top = "0px";
  }
  var xpos = parseInt(elem.style.left);
  var ypos = parseInt(elem.style.top);
  if (xpos == final_x && ypos == final_y) {
    return true;
  }
  if (xpos < final_x) {
    var dist = Math.ceil((final_x - xpos)/14);
    xpos = xpos + dist;
  }
  if (xpos > final_x) {
    var dist = Math.ceil((xpos - final_x)/14);
    xpos = xpos - dist;
  }
  if (ypos < final_y) {
    var dist = Math.ceil((final_y - ypos)/14);
    ypos = ypos + dist;
  }
  if (ypos > final_y) {
    var dist = Math.ceil((ypos - final_y)/14);
    ypos = ypos - dist;
  }
  if (ypos > final_y) {
    var dist = Math.ceil((ypos - final_y)/14);
    ypos = ypos - dist;
  }
  if (ypos > final_y) {
    var dist = Math.ceil((ypos - final_y)/14);
    ypos = ypos - dist;
  }
   if (ypos > final_y) {
    var dist = Math.ceil((ypos - final_y)/14);
    ypos = ypos - dist;
  }
  elem.style.left = xpos + "px";
  elem.style.top = ypos + "px";
  var repeat = "moveElement('"+elementID+"',"+final_x+","+final_y+","+interval+")";
  elem.movement = setTimeout(repeat,interval);
}

function prepareslideshow() {
  								if (!document.getElementsByTagName) return false;
  								if (!document.getElementById) return false;
  								
								if (!document.getElementById("intra")) return false;
  								var intro = document.getElementById("intro");
  								var slideshow = document.createElement("div");
  								slideshow.setAttribute("id","slideshow");
  								
								var intra = document.getElementById("intra");
  								var slideshowp = document.createElement("divp");
  								slideshowp.setAttribute("id","slideshowp");
  
  
  								var preview = document.createElement("img");
  								preview.setAttribute("src","../imageslayout/cebollas.jpg");
  								preview.setAttribute("alt","a glimpse of what awaits you");
  								preview.setAttribute("id","preview");
  								slideshow.appendChild(preview);
  								insertAfter(slideshow,intro);
  
  								var previewp = document.createElement("img");
  								previewp.setAttribute("src","../imageslayout/papas.jpg");
  								previewp.setAttribute("alt","a glimpse of what awaits you");
  								previewp.setAttribute("id","previewp");
  								slideshowp.appendChild(previewp);
  								insertAfter(slideshowp,intra);
  
  var links = document.getElementsByTagName("a");
  for (var i=0; i<links.length; i++) 
  {	links[i].onmouseover = function() {	var destination = this.getAttribute("href");
  		if (destination.indexOf("index.php") != -1) {
		moveElement("preview",0,0,6);		moveElement("previewp",0,0,6);}
      	
		if (destination.indexOf("cosecha.php") != -1) {
        moveElement("preview",-238,0,6);	moveElement("previewp",-238,0,6);
      }
      	if (destination.indexOf("transporte.php") != -1) {
        moveElement("preview",-476,0,6);	moveElement("previewp",-476,0,6);
      }
      	if (destination.indexOf("almacenaje.php") != -1) {
        moveElement("preview",-714,0,6);	moveElement("previewp",-714,0,6);
      }
      	if (destination.indexOf("procesos.php") != -1) {
        moveElement("preview",-952,0,6);	moveElement("previewp",-952,0,6);
      }
	  	if (destination.indexOf("empaque.php") != -1) {
        moveElement("preview",-1190,0,6);	moveElement("previewp",-1190,0,6);
      }
	  	if (destination.indexOf("detodo.php") != -1) {
        moveElement("preview",-1428,0,6);	moveElement("previewp",-1428,0,6);
		
		
      }
	  
    }
	
  }
  
}


addLoadEvent(prepareslideshow);