Alerts stopped working

Question

YooJayDee 0 Newbie Poster

13 Years Ago

Hi,

I am using MasterPages with ASP.NET. The main contstruct of my MasterPage is a table providing a header, menu panel, main content and footer. I would like the table to at least fill the whole screen height. I've found (thru Google) a way of determining the screen height. The only way I can adjust the height of the table is to do it from a Javascript function which is called from the Code-Behind Page_Load. All attempts doing this purely by Javascript have failed. Trouble is that this Code-Behind / Javascript solution stops the javascript alert (pop-up) function working. Would really appreciate some advice on this. Haven't included any code here in case this is a recognisable problem, but am happy to do so. Have done decades of client-server development but first time into proper web development.

Thanks,
UJD.

asp.net javascript

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Latest Post 13 Years Ago Latest Post by YooJayDee

kvprajapati 1,826 Posting Genius

13 Years Ago

I think some more information is required so that the best course of action can be taken. Show us your code please. Please use BB code tags while posting source program.

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YooJayDee 0 Newbie Poster · Answer 1 · 2011-01-05T19:50:54+00:00

Hi, I've stripped out the bulk of the code and kept only that which seems relevant. Hope this provides sufficient material for you to review. Thanks in advance.

MasterPage.aspx

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">
    <title>Vaishnav Sangh UK</title>
    <link rel="Stylesheet" type="text/css" href="MasterPage.css"/>
    <script type="text/javascript">
	.
	.
        // determine screen height
        function pageHeight() {
            return window.innerHeight != null ? window.innerHeight : document.documentElement 
				      && document.documentElement.clientHeight ? document.documentElement.clientHeight : document.body 
				      != null ? document.body.clientHeight : null;
        }
        function SetMainTableHeight(elementID) {
            document.getElementById(elementID).height = pageHeight();
        }

        function attachEventHandler(element, eventToHandle, eventHandler) {
            if (element.attachEvent) {
                element.attachEvent(eventToHandle, eventHandler);
            } else if (element.addEventListener) {
                element.addEventListener(eventToHandle.replace("on", ""), eventHandler, false);
            } else {
                element[eventToHandle] = eventHandler;
            }
        }        
        // attach resize event
        attachEventHandler(window, "onresize", function() { SetMainTableHeight('MainLayout'); });
   </script>
    <style type="text/css">
	.
	.
    </style>
</head>

<body>
    <form id="form1" runat="server">
    <div align="center">
    <table id="MainLayout" cellpadding="5">
        <col />
        <col />
        <tr id="HeaderRow" valign="middle" style="background-color: #FF9900; height: 110px">
            <td id="HeaderCell" valign="middle" colspan="2">
		.
		.
            </td>
        </tr>
        <tr id="MainData">
            <td id="MainMenuCell" class="stMenuAll" valign="top" style="padding-left: 40px">
                <asp:Image runat="server" ImageUrl="~/Images/WidthSetterMenu.jpg" />
                <table class="stMenuAll" width="260px" align="center">
			.
			.
                    <tr>
                        <td id="mnuContact" class="stMenuLevel1"
                            onmouseover="MouseOverMenuHighlight('mnuContact')" onmouseout="MouseOutMenuUnHighlight('mnuContact')">
                            <a href="ContactUs.aspx">Contact</a>
                        </td>
                    </tr>
			.
			.
                </table>
            </td>
            <td id="MainContentCell" style="background-color: #FEF5E2">
                <asp:ContentPlaceHolder ID="MainContent" runat="server">
                </asp:ContentPlaceHolder>
            </td>
        </tr>
        <tr>
            <td colspan="2" class="stFooter" style="height: 60px">
                <table width="100%">
                    <tr>
			.
			.
                    </tr>
                </table>
            </td>
        </tr>
    </table>
    </div>
    </form>
</body>

</html>

MasterPage.cs
It works if I remove the call to SetMainTableHeight

protected void Page_Load(object sender, EventArgs e)
    {   
	.
	.
        // set main table height
        Page.ClientScript.RegisterStartupScript(typeof(Page), "test", "<script>SetMainTableHeight('MainLayout');</script>");
	.
	.
    }

Contact.cs
Alert that has stopped working

protected void cmdSubmit_Click(object sender, EventArgs e)
    {
	.
	.
     	// confirm ok
        ClientScript.RegisterStartupScript(typeof(Page), "test", "<script>alert('Your message has been sent and copied to the email address supplied');</script>");        
	.
	.
    }