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DHTML Diagonal Scroller

Article by:

Premshree Pillai (8/28/2002)

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Summary:

Scroll text horizontally when the user hovers over a link.

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DHTML Diagonal Scroller

This script is a simple modification of Link Hint Scroller. The only difference here is that the hint will scroll diagonally.

When you move your mouse over the link a hint or something about the link will appear below the link in a diagonally scrolling fashion. When you move your mouseout the scrolling will stop.

There are a few variables you can change:

scroll_height : Scroll height variable (150 here)

time_length : Speed of scroll (50 here, meaning after 50 milliseconds the hint will change position by 1 pixel i.e a speed of 20 pixels/second)

begin_pos : Beginning position of hint (20 here)

To use this Javascript, firstly you must copy the script and place it in the head section.

Select All Code

<!--BEGIN REQUIRED-->
<script language="javascript">
// Location of this script:
// http://www.qiksearch.com/javascripts/qiksearch_vertical_scroller.htm
//*********************************************
//* Qiksearch Vertical Scroller               *
//* This script when you move your mouse over *
//* displays a vertical scrolling hint        *
//* (c) Premshree Pillai,                     *
//* http://www.qiksearch.com                  *
//* E-mail : premshree@hotmail.com            *
//* Use the script freely as long as this     *
//* message is intact                         *
//*********************************************

window.onerror = null;
 var bName = navigator.appName;
 var bVer = parseInt(navigator.appVersion);
 var NS4 = (bName == "Netscape" && bVer >= 4);
 var IE4 = (bName == "Microsoft Internet Explorer" 
 && bVer >= 4);
 var NS3 = (bName == "Netscape" && bVer < 4);
 var IE3 = (bName == "Microsoft Internet Explorer" 
 && bVer < 4);
 var scroll_height = 150; //The scroll height
 var time_length =50; //Scroll speed
 var begin_pos = 20; //Start position of scroll hint
 var i;
 var j;
 
if (NS4 || IE4) {
 if (navigator.appName == "Netscape") {
 layerStyleRef="layer.";
 layerRef="document.layers";
 styleSwitch="";
 }else{
 layerStyleRef="layer.style.";
 layerRef="document.all";
 styleSwitch=".style";
 }
}

//SCROLL
function Scroll(layerName){
if (NS4 || IE4) {
 if (NS4 || IE4) { 
 if(i<(begin_pos+scroll_height)){
 eval(layerRef+'["'+layerName+'"]'+
 styleSwitch+'.visibility="visible"');
 eval(layerRef+'["'+layerName+'"]'+
 styleSwitch+'.top="'+i+'"');
 i++;
 j++;
 if(i==j){
 setTimeout("Scroll('"+layerName+"')",time_length);}
 }
 }
 }
}

//STOP SCROLLING
function StopScroll(layerName)
{
i=begin_pos+scroll_height;
  eval(layerRef+'["'+layerName+'"]'+
  styleSwitch+'.top="'+i+'"');
  hideLayer(layerName);
}

function reset()
{ 
i=begin_pos;
j=i;
}

// HIDE HINT
function hideLayer(layerName){
 if (NS4 || IE4) {
 eval(layerRef+'["'+layerName+'"]'+
 styleSwitch+'.visibility="hidden"');
 }
 }

</script>
<!--END REQUIRED-->

Now place the following within the body of the page:

Select All Code

<!--BEGIN REQUIRED-->
<a href="#" class="link" onmouseover="javascript:reset();Scroll('prem_hint');" onmouseout="javascript:StopScroll('prem_hint');">Move your mouse over</a>
</center>
<div id="prem_hint" style="position:relative; left:50; visibility:hidden" class="prem_hint">
<font color="#FF0000"><b>Vertical Scrolling!</b></font>
</div>
<!--END REQUIRED-->

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