Question

Text pop up on MouseOver along with fitting background image to window

Asked by: rsalunkhe

HI,

I am trying to get the effect of a text pop up on MouseOver event. I have the code for this from some website, used it in some of my pages and it works.

But now what i am trying to do is incorporate that effect in a page which has another effect--- that of making the background image resize as per the window size. The solution to this later part can be found at -

http://www.experts-exchange.com/Web/Graphics/Web_Images/Q_20526046.html

I have implemented that at http://web.njit.edu/~ras5/trial4.html

Now the problem is when i try to comdine both the effects i do not get the MouseOver text box. When i remove the code of background effect the text box does come. So i guess the text box hides behind the background when both effects are present. I do not know how to solve this problem.

The page containing the code for both the effects i am trying to achieve is at http://web.njit.edu/~ras5/trial.html

You can see the implementation of the code and the manner in which i am trying to achieve it by right clicking and viewing the source. Though the stretching of background is achieved.....the text pop up on mouseover does not appear when the mouse is over the first image.

Below i have given the individual codes for each effect-

-------------------------------------------------------------------
For stretching background to window size--

<style type="text/css">
#backPic {
z-Index:0;
display:block;
position:absolute;
display:block;
left:0%;
top:0%;
width:100%;
height:100%;
}
/* make it sticky in non MSIE 5/6 */
html>body #backPic {
   position:fixed;
}
#tbl {
border:2px solid red;
display:block;
z-index:2;
position:absolute;
left:0%;
top:0%;
width:100%;
/* for CSS2 browsers */
min-height:100%;
}
h1 {color:red;}
</style>
<script language="JScript">
<!-- /* MSIE only JScript !! */
function fixBgImage() {
if (document.all.backPic.style.setExpression) {
 document.all.backPic.style.setExpression("height","document.all.tbl.offsetHeight");
 document.recalc();
}
}
ie5 = (document.all && document.getElementById && !document.fireEvent)?true:false;
ie55= (document.all && document.fireEvent && !document.createComment)?true:false;
ie6 = (document.all && document.fireEvent && document.createComment)?true:false;
if (!window.opera && (ie5 || ie55 || ie6)) onload=fixBgImage;
// -->
</script>
<body topmargin="0" leftmargin="0">
<img src="images/castlecopy.jpg" id="backPic" width="640" height="480"  >


-------------------------------------------------------------------


-------------------------------------------------------------------
For getting pop up text box on MouseOver--
<DIV ID="dek"></DIV>

<SCRIPT TYPE="text/javascript">
<!--

//Pop up information box II (Mike McGrath (mike_mcgrath@lineone.net,  http://website.lineone.net/~mike_mcgrath))
//Permission granted to Dynamicdrive.com to include script in archive
//For this and 100's more DHTML scripts, visit http://dynamicdrive.com

Xoffset=-60;    // modify these values to ...
Yoffset= 20;    // change the popup position.

var old,skn,iex=(document.all),yyy=-1000;

var ns4=document.layers
var ns6=document.getElementById&&!document.all
var ie4=document.all

if (ns4)
skn=document.dek
else if (ns6)
skn=document.getElementById("dek").style
else if (ie4)
skn=document.all.dek.style
if(ns4)document.captureEvents(Event.MOUSEMOVE);
else{
skn.visibility="visible"
skn.display="none"
}
document.onmousemove=get_mouse;

function popup(msg,bak){
var content="<TABLE  WIDTH=150 BORDER=1 BORDERCOLOR=black CELLPADDING=2 CELLSPACING=0 "+
"BGCOLOR="+bak+"><TD ALIGN=center><FONT COLOR=black SIZE=2>"+msg+"</FONT></TD></TABLE>";
yyy=Yoffset;
 if(ns4){skn.document.write(content);skn.document.close();skn.visibility="visible"}
 if(ns6){document.getElementById("dek").innerHTML=content;skn.display=''}
 if(ie4){document.all("dek").innerHTML=content;skn.display=''}
}

function get_mouse(e){
var x=(ns4||ns6)?e.pageX:event.x+document.body.scrollLeft;
skn.left=x+Xoffset;
var y=(ns4||ns6)?e.pageY:event.y+document.body.scrollTop;
skn.top=y+yyy;
}

function kill(){
yyy=-1000;
if(ns4){skn.visibility="hidden";}
else if (ns6||ie4)
skn.display="none"
}

//-->
</SCRIPT>

Usage example-
<td width="33%" align="center">
      <a href="../../images/pics/misc/assorted/frisbeechamps.jpg"
      ONMOUSEOVER="popup('Playing frisbee','lime')"; ONMOUSEOUT="kill()">
      <img border="2" src="../../images/pics/misc/assorted/frisbeechamps_small.jpg" xthumbnail-orig-image="../../images/pics/misc/assorted/frisbeechamps.jpg" width="100" height="117"></a></td>
 

-------------------------------------------------------------------

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Asked On
2003-07-05 at 14:40:34ID20669465
Tags

text

,

popup

,

mouseover

,

image

Topic

Web Images

Participating Experts
4
Points
150
Comments
7

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Answers

 

by: cirtapPosted on 2003-07-05 at 17:40:14ID: 8862367

Hi,

it's probably because of a z-index problem with 'dek' layer. Try to raise it to some barge number (100 or so) so it'll always appear above other positioned elements.
Althought the backPic has a z-index of 0 does not mean the layer might get overed by some other element.

Have fun,
CirTap

 

by: rsalunkhePosted on 2003-07-05 at 19:26:06ID: 8862615

Hi CirTap,

I tried changing the value of the z-index but then the table vanishes and only the background image remains. This happens at z=3 and any value above 3.

Any other hints?

Ranjit

 

by: webwomanPosted on 2003-07-07 at 07:29:51ID: 8869631

Make sure that the main content is also in a div, with an index of 1. Your background is 0, your content is 1, and the popups are 2. See if that works.

 

by: rsalunkhePosted on 2003-07-14 at 18:50:23ID: 8921994

Hi,

I found the error. The problem was with the index........but that was because i forgot to paste the following lines :

<STYLE TYPE="text/css">
<!--
#dek {POSITION:absolute;VISIBILITY:hidden;Z-INDEX:200;}
//-->
</STYLE>


BUt i have one more question related to this effect-

How can i achieve the watermark effect with this code? I tried placing the bgproperties = fixed in the body tag but it does not achieve that effect. Any possibility to achieve that effect for this same image stretchable code?

 

by: rsalunkhePosted on 2003-07-19 at 22:00:01ID: 8960728


I know the heading os this question is slightly different from what i am writing now but that is mainly because i solved that problem and now i am trying to achieve another effect .....using the same points i have allocated!! :)

I have not been able to get the watermark effect as yet inspite of me trying to play around with the code given above (courtesy- Cirtap) and using the CSS parameter - background-attachment:fixed

(Actually i doubt the watermark feature can work for the code because it was meant to stretch the image as per the page size which it does successfully)

So i found this other javascript given below(from the link: http://www.webreference.com/dhtml/diner/bgresize/bgresize3.html) that stretches the image only to the window size and NOT page size. I then tried to introduce the style parameter : background-attachment:fixed and then the bgproperties="fixed" parameter in the body tag yet i did not achieve the watermark effect. Any way i could do that?

--------------------------
<HEAD>
<SCRIPT LANGUAGE="JavaScript1.2">
<!--
    NS4 = (document.layers);
    IE4 = (document.all);
   
    scaleWidth = true;
    scaleHeight = true;
    imSRC = "skiff.jpg";

    if (NS4) window.onload = setResize;

    function setResize(){
        setTimeout("window.onresize=reDo;",500);
    }

    function reDo(){
        window.location.reload()
    }

    if (IE4) window.onresize = reDoIE;

    function reDoIE(){
        imBG.width = document.body.clientWidth;
        imBG.height = document.body.clientHeight;
    }

    function makeIm() {
   
      winWid = (NS4) ? innerWidth : document.body.clientWidth;
      winHgt = (NS4) ? innerHeight : document.body.clientHeight;
   
      imStr = "<DIV ID=elBGim"
      + " STYLE='position:absolute;left:0;top:0;z-index:-1'>"
      + "<IMG NAME='imBG' BORDER=0 SRC=" + imSRC;
      if (scaleWidth) imStr += " WIDTH=" + winWid;
      if (scaleHeight) imStr += " HEIGHT=" + winHgt;
      imStr += "></DIV>";
   
      document.write(imStr);
   
    }
//-->
</SCRIPT>
</HEAD>

<BODY MARGINHEIGHT=0 MARGINWIDTH=0>
<SCRIPT LANGUAGE="JavaScript1.2">
<!--
    makeIm();
//-->
</SCRIPT>
.
. remainder of page HTML
.
----------------------

 

by: ren_bPosted on 2003-07-23 at 07:20:10ID: 8986429

watermark as in little transparent cover for pictures or what not? you can add something in your css for transparent pictures...

.something {
filter:alpha(opacity=x); //x is a percentage
-moz-opacity:y; // y is a percentage decimal form ( 70% = .7, 23% = .23, etc)
}

 

by: r_linuxPosted on 2003-07-23 at 09:16:16ID: 8987628


The background image is a div layer. Put the rest of the content in another div tag.


<div style="padding : 5px; width : 100%; height : 100%; overflow:auto;">

......
......
(put your content here)

</div>

</body>

The bakground stays stationary and the second layer is what becomes scrollable.

Ryan

20120131-EE-VQP-002

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