Hola a todos
Soy nuevo en esto asi que disculpen las novatadas, estoy usando windows xp
sp2, IE 7, VS2005.
El problema es que quiero usar un javascript de un news scroller que carga
la informacion desde un documento xml, en una pagina normal HTML todo
funciona bien pero cuando lo quiero correr desde un pagina ASP no corre
tengo 2 dias y no encuentro porque estoy a punto de dejarlo en la pagina
HTML y olvidarme de las ASP para este script, podria alguien hecharme la
mano, primero posteo mi pagina ASP y en seguida el script.
Gracias
************* Primero la ASP *************
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default2.aspx.vb"
Inherits="Default2" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"
http://www.w3.org/TR/xhtml1/DTD/xht...">
<html xmlns="
http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
<script type="text/javascript" language="JavaScript"
src="JS/newsscroller.js" />
</head>
<body>
<script type="text/javascript">
var scrollerMain = new NewsScroller("main");
</script>
<div style="float: right; width: 150px; height: 160px;"
onmouseover="javascript:scrollerMain.StopScrolling();"
onmouseout="javascript:scrollerMain.StartScrolling();">
<script type="text/javascript">
scrollerMain.Render("floatingNews");
</script>
</div>
<script type="text/javascript">
scrollerMain.LoadXML('
http://localhost/news.xml');
</script>
<script type="text/javascript">
scrollerMain.StartScrolling ();
</script>
</body>
</html>
************* Ahora este es el script ************
// title and copyright notice go here
// API
// These are the functions you will call to use the NewsScroller from your
web page
// NewsScroller_Initialize
// Parameters:
// elmDivForNews: object reference to a DIV element that will be used to
display the news
// Return:
// returns a NewsScroller object, with supporting properties and methods
function NewsScroller ()
{
if (window.NewsScrollerInstance != null)
{
window.alert("Only one NewsScroller control is allowed on a page.");
return;
}
window.NewsScrollerInstance = this;
this.LoadXML = NewsScroller_LoadXML;
this.AddNewsItem = NewsScroller_AddNewsItem;
this.Clear = NewsScroller_Clear;
this.StartScrolling = NewsScroller_StartScrolling;
this.StopScrolling = NewsScroller_StopScrolling;
this.Render = NewsScroller_Render;
// public properties
this.className = "";
this.itemNormalClassName = "";
this.scrollRate = 25;
this.scrollStep = 1;
this.scrollPause = 2000;
// internal use
this.RenderChildren = NewsScroller_RenderChildren;
this.renderedControl = "";
this.itemsText = new Array();
this.itemsLink = new Array();
this.itemCount = 0;
this.scrollEnabled = false;
}
function NewsScroller_LoadXML (sXmlID)
{
this.Clear();
var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async="false";
xmlDoc.load(sXmlID);
var xItems = xmlDoc.getElementsByTagName('item');
for (var iNode = 0; iNode < xItems.length; iNode++)
{
var xItem = xItems[iNode];
var xText = xItem.childNodes[0].text;
var xLink = xItem.childNodes[1].text;
this.AddNewsItem(xText, xLink);
} var elmControl = document.getElementById(this.renderedControl);
this.RenderChildren(this.renderedControl);
}
function NewsScroller_AddNewsItem (strText, strLink)
{
this.itemsText[this.itemCount] = strText;
this.itemsLink[this.itemCount] = strLink;
this.itemCount++;
}
function NewsScroller_Clear ()
{
this.StopScrolling ();
var elmControl = document.getElementById(this.renderedControl);
while (elmControl.childNodes.length > 0)
elmControl.removeChild(elmControl.childNodes[0]);
this.itemsText = new Array();
this.itemsLink = new Array();
this.itemCount = 0;
}
function NewsScroller_StartScrolling ()
{
if (this.itemCount > 0)
{
var sControlName = this.renderedControl;
if (sControlName == null)
{
window.alert ("You must render a control before you can start scrolling
it.");
return;
}
var elmControl = document.getElementById(sControlName);
var elmItem0 = document.getElementById("floatingNews0");
if (this.itemCount > 1)
{
var elmItem1 = document.getElementById(sControlName + "1");
this.cySeparator = (elmItem1.offsetTop - elmItem0.offsetTop) -
elmItem0.offsetHeight;
}
else
{
this.cySeparator = 0;
}
if (this.ScrollTimerID == null)
this.ScrollTimerID = window.setInterval(NewsScroller_ScrollNews,
this.scrollRate);
}
}
function NewsScroller_StopScrolling ()
{
window.clearInterval(this.ScrollTimerID);
this.ScrollTimerID = null;
}
function NewsScroller_Render(sControlID)
{
if (sControlID.length == 0)
{
window.alert("You must provide a unique ID for the rendered control.");
return;
}
var elmControl = document.getElementById(sControlID);
if (elmControl != null)
{
window.alert("A NewsScroller with this ID has already been rendered.
Please use a unique ID.");
return;
}
this.renderedControl = sControlID;
// <DIV>
document.write("<div");
document.write(" id=\"" + sControlID + "\"");
document.write(" class=\"" + this.className + "\"");
document.write(" style=\"position: relative; width: 100%; height: 100%;
\"");
document.write(">");
// </DIV>
document.write("</div>");
this.RenderChildren(sControlID);
var dtNow = new Date();
var dtResume = new Date(dtNow.getFullYear(), dtNow.getMonth(),
dtNow.getDate(), dtNow.getHours(), dtNow.getMinutes(), dtNow.getSeconds(),
this.scrollPause);
elmControl = document.getElementById(sControlID);
elmControl.ResumeDateTime = dtResume;
}
// Supporting functions
function NewsScroller_RenderChildren()
{
var sControlID = this.renderedControl;
elmControl = document.getElementById(sControlID);
// <DIV>
elmDiv = document.createElement("div");
elmDiv.style.position = "absolute";
elmDiv.style.left = "0px";
elmDiv.style.width = "100%";
elmDiv.style.height = "100%";
elmDiv.style.overflow = "hidden";
elmControl.appendChild(elmDiv);
for (var nItem = 0; nItem < this.itemCount; nItem++)
{
var sItemName = sControlID + nItem.toString();
var elmP = document.createElement("p");
elmP.id = sItemName;
elmP.style.position = "relative";
elmP.style.top = "0px";
elmP.style.width = "100%";
elmP.className = this.itemNormalClassName;
elmDiv.appendChild(elmP);
var elmA = document.createElement("a");
elmA.className = this.itemNormalClassName;
elmA.href = this.itemsLink[nItem];
elmP.appendChild(elmA);
var tn = document.createTextNode(this.itemsText[nItem]);
elmA.appendChild(tn);
}
}
function NewsScroller_ScrollNews()
{
var ns = window.NewsScrollerInstance;
var sControlName = ns.renderedControl;
if (sControlName.length == 0)
{
window.alert ("Do not call ScrollNews directly. Use the Start method of
the NewsScroller object.");
return;
}
var elmControl = document.getElementById(sControlName);
if (new Date() >= elmControl.ResumeDateTime)
{
// see whether any item is about to reach the top,
var cyOffset = 0;
for (var nItem = 0; nItem < ns.itemCount; nItem++)
{
var sItemName = sControlName + nItem.toString();
var elmItem = document.getElementById(sItemName);
if ((elmItem.offsetTop > 0) && ((elmItem.offsetTop - ns.scrollStep) <0))
{
// the top of this item has reached the top of the control,
// so pause scrolling for the whole control
var dtNow = new Date();
var dtResume = new Date(dtNow.getFullYear(), dtNow.getMonth(),
dtNow.getDate(), dtNow.getHours(), dtNow.getMinutes(), dtNow.getSeconds(),
ns.scrollPause);
elmControl.ResumeDateTime = dtResume;
cyOffset = elmItem.offsetTop;
}
}
if (cyOffset > 0)
{
// control is just now paused, so scroll all items up
// in order to put the top item flush with the top of the control
for (var nItem = 0; nItem < ns.itemCount; nItem++)
{
var sItemName = sControlName + nItem.toString();
var elmItem = document.getElementById(sItemName);
elmItem.style.pixelTop = elmItem.style.pixelTop - cyOffset;
}
}
else
{
// the control is not paused, so scroll every item up by one step
for (var nItem = 0; nItem < ns.itemCount; nItem++)
{
var sItemName = sControlName + nItem.toString();
var elmItem = document.getElementById(sItemName);
elmItem.style.pixelTop -= ns.scrollStep;
}
}
// see whether any items have scrolled off the top
for (var nItem = 0; nItem < ns.itemCount; nItem++)
{
var sItemName = sControlName + nItem.toString();
var elmItem = document.getElementById(sItemName);
if ((elmItem.offsetTop + elmItem.offsetHeight) <= 0)
{
// the bottom of this item has scrolled beyond the top of the control,
// so move it to the bottom of the control
if (ns.itemCount > 1)
{
var sBottomItemName;
if (nItem == 0)
sBottomItemName = sControlName + (ns.itemCount - 1).toString();
else
sBottomItemName = sControlName + (nItem - 1).toString();
var elmBottomItem = document.getElementById(sBottomItemName);
elmItem.style.pixelTop = (elmBottomItem.offsetTop +
elmBottomItem.offsetHeight + ns.cySeparator) - (elmItem.offsetTop -
elmItem.style.pixelTop);
}
else
{
elmItem.style.pixelTop = elmItem.parentElement.offsetHeight;
}
}
}
}
}
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