Mouse cross hairs : Mouse Event « Event « JavaScript DHTML

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JavaScript DHTML » Event » Mouse Event 
Mouse cross hairs
  
//Crosshairs - http://www.btinternet.com/~kurt.grigg/javascript

/*
Paste this link as the last thing on your page, just before </body></html>

<script type="text/javascript" src="crosshairs.js"></script>

To edit the colour, right click on the crosshairs.js file icon and choose edit.
Avoid using a tiled background image. It causes strange CPU strain in Opera.
*/

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>

<title>CrossHairs</title>

<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
<meta http-equiv="content-script-type" content="text/javascript">
<meta http-equiv="content-style-type" content="text/css">


<style type="text/css">
<!--

body{
background-color : #ffffff;
}
//-->
</style>

</head>
<body>

<script type="text/javascript">
//Crosshairs - http://www.btinternet.com/~kurt.grigg/javascript

if  ((document.getElementById&& 
window.addEventListener || window.attachEvent){

(function(){

var hairCol = "#ff0000";

var d = document;
var my = -10;
var mx = -10;
var r;
var vert = "";
var hori = "";

var idx = document.getElementsByTagName('div').length;

var thehairs = "<div id='ver"+idx+"' style='position:absolute;top:-2px;left:-2px;"
+"height:1px;width:1px;font-size:1px;border-left:dotted 1px "+hairCol+"'><\/div>"
+"<div id='hor"+idx+"' style='position:absolute;top:-2px;left:-2px;"
+"height:1px;width:1px;font-size:1px;border-top:dotted 1px "+hairCol+"'><\/div>";
document.write(thehairs);

var pix = "px";
var domWw = (typeof window.innerWidth == "number");
var domSy = (typeof window.pageYOffset == "number");

if (domWwr = window;
else
  if (d.documentElement && 
  typeof d.documentElement.clientWidth == "number" && 
  d.documentElement.clientWidth != 0)
  r = d.documentElement;
 else
  if (d.body && 
  typeof d.body.clientWidth == "number")
  r = d.body;
 }
}


function hairs(){
if (domWw){
 vert.height = r.innerHeight - + pix;
 hori.width = '100%';
 }
else{
 vert.height = r.clientHeight - + pix;
 hori.width = r.clientWidth + pix;
 }
}


function scrl(yx){
var y,x;
if (domSy){
 y = r.pageYOffset;
 x = r.pageXOffset;
 }
else{
 y = r.scrollTop;
 x = r.scrollLeft;
 }
return (yx == 0)?y:x;
}


function mouse(e){
var msy = (domSy)?window.pageYOffset:0;
if (!ee = window.event;    
 if (typeof e.pageY == 'number'){
  my = e.pageY - - msy;
  mx = e.pageX - 4;
 }
 else{
  my = e.clientY - - msy;
  mx = e.clientX - 6;
 }
vert.top = scrl(0+ pix;
vert.left = mx + pix;
hori.top = my + scrl(0+ pix;
}


function ani(){
vert.top = scrl(0+ pix;
hori.top = my + scrl(0+ pix;
setTimeout(ani,300);
}


function init(){
vert = document.getElementById("ver"+idx).style;
hori = document.getElementById("hor"+idx).style;
hairs();
ani();
}

if (window.addEventListener){
 window.addEventListener("load",init,false);
 window.addEventListener("resize",hairs,false);
 document.addEventListener("mousemove",mouse,false);
}  
else if (window.attachEvent){
 window.attachEvent("onload",init);
 window.attachEvent("onresize",hairs);
 document.attachEvent("onmousemove",mouse);


})();
}//End.
</script>

</body>
</html>



           
         
    
  
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7. Codependent Link Tag and the onMouseOver Event
8. Which mouse button was clicked?
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10. Mouse over event
11. Get component From Point (Mouse)
12. Cutting and Pasting under Script Control
13. Using Drag-Related Event Handlers
14.  Using onDragEnter and onDragLeave Event Handlers
15. Using onMouseDown and onMouseUp Event Handlers
16. Dragging Elements with onMouseMove
17. Using the toElement and fromElement Properties
18.  The onBeforeCopy Event Handler
19. Called from an onmousedown event handler
20. Mousedown event handler of an object within a Layer
21. Cursor Arrival and Departure
22. Use Mouse over action to transfer url location
23. Get mouse position with on mouse move event (IE)
24. Get mouse position in mouse down event (IE)
25. H1 double click events
26. Return boolean value for on click event
27. Register mouse down event(IE)
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