button to dynamically affect pre-existing javascript... you'll see...

iamrakesh22 · #11 (**permalink**) October 6th, 2009, 12:01 AM

The event you are using for scrolling those blocks is onmousemove, and the example i gave uses "onmouseover". Try changing the "onmouseover" event in "start()" and "stop()" functions to "onmousemove"!

Code:

function start() {
            document.getElementById('hmenu').onmousemove = autoscroll(e);
        }
        // function to stop the move over event
        function stop() {
            document.getElementById('hmenu').onmousemove = null;
        }

iamrakesh22 · #12 (**permalink**) October 6th, 2009, 12:06 AM

One more thing you need not pass the event object while adding onmousemove event in "start()" method

Code:

document.getElementById('hmenu').onmousemove = autoscroll;

the above code will do. I just tried on the url you gave, its working :-)

semiotically · #13 (**permalink**) October 6th, 2009, 07:44 AM

yes perfection to last detail 5*

thank you:

this works...

<head>
<script type="text/javascript" src="http://www.semiotically.com/ascroll.js"></script>
<script type="text/javascript" >
function init (){
document .getElementById ('hmenu').onmousemove=autoscroll;
}
window.onload = init;
</script>

<script>
// function to start animation of sort on mouse over
function start() {
document.getElementById('hmenu').onmousemove = autoscroll;
}
// function to stop the move over event
function stop() {
document.getElementById('hmenu').onmousemove = null;
}
// initialize on page load
window.onload = init;
</script>
</head>

<body>
<h1 id="hmenu" style="color:red;"></h1>
<input type="button" value="StartScroll" onclick="start()" />
<input type="button" value="StopScroll" onclick="stop()" /> now working...
</body>

semiotically · #14 (**permalink**) October 6th, 2009, 08:10 AM

Hi Rakesh, will this code streamline things, is a recommendation from another:

All you need to do is create a variable to hold whether to scroll or not:
Code:

var keepScrolling=true;

Then change the autoscroll function to look something like this:
Code:

function autoscroll(e)
{
//If the boolean is set to false, stop the function here rather than continuing
if(keepScrolling==false) return;
var mousx = 0;
var mousy = 0;
var doid=this.id;
var dobj=document.getElementById(doid);
if (!e) var e = window.event;
if (e.pageX || e.pageY)
{
mousx = e.pageX;
mousy = e.pageY;
}
else if (e.clientX || e.clientY)
{
mousx = e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
mousy = e.clientY + document.body.scrollTop + document.documentElement.scrollTop;
}
var offx = offy = 0;
while(dobj) // calculate the actual x&y offsets of the element to be scrollled
{
offx+=dobj.offsetLeft;
offy+=dobj.offsetTop;
dobj=dobj.offsetParent;
}
relx=mousx-offx; // Relative mouse positions wrt the element
rely=mousy-offy;
dobj=document.getElementById(doid);
var margn=dobj.offsetWidth/10;
if(relx<margn) relx=margn;
if(relx > (dobj.offsetWidth-margn)) relx=dobj.offsetWidth-margn;
dobj.finy=parseInt(( dobj.scrollHeight - dobj.offsetHeight ) * (rely-margn) / (dobj.offsetHeight-2*margn));
dobj.finx=parseInt(( dobj.scrollWidth - dobj.offsetWidth ) * (relx-margn) / (dobj.offsetWidth-2*margn));
if(!dobj.speedy && !dobj.speedx) // If not already scrolling
{ dobj.speedy=0;
dobj.speedx=0;
scrollToFin(doid);
}
}

Then change your start and stop functions to the following:
Code:

function start() {
keepScrolling=true;
}
// function to stop the move over event
function stop() {
keepScrolling=false;
}

semiotically · #15 (**permalink**) October 6th, 2009, 10:08 PM

hi another implementation.

1. Am using this script:

<script language=javascript>function loadsource()
{
var defaultPage = "tweets.html";
var query = window.location.search.substring(1);
var pos = query.indexOf('=');
if (pos > 0)
{
var frameSource = query.substring(pos+1);
window.frames["righthere"].location = frameSource;
}
else
{
window.frames["righthere"].location = defaultPage;
}
}
</script>

with this code:

<body onLoad="loadsource()">

This scipt allows me to load external content into IFrames (within index.html), try if you wish: http://www.semiotically.com/index.html?fs=cv.pdf

THE ISSUE:

When using <body onLoad="loadsource()"> it intereferes with the scrolling script, and although still works you have to manually click start scrolling button. So how can I alter this little snippet to achieve same effect though with the scrolling still active straightaway?

iamrakesh22 · #16 (**permalink**) October 8th, 2009, 12:02 AM

Have one method attached to 'onload' event and call both the fuctions loadsource(), and autoscroll() from it. OR you can try by adding both the methods to onload event, seperate them with ';'

Code:

<body onload="loadsource();autoscroll();">

amandaboard · #17 (**permalink**) October 8th, 2009, 03:51 AM

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