Thank you very much mrMax, I'll get to work on the "snapping" tomorrow   
Now, the formfield thing...
I can assign value this way to all inputfields fine, except when it's type="file" !
Here is the current test-code, it's commented around the parts that refuse to work.
(please ignore design, none is done)
I've got a workaround for it, which is to let the user browse for the file himself, first, then drag it to correct classification (change as commented in code), but I would like to have the option to dynamically add file-icons through the filesystemobject on the clientside if need arises (multi saving files under the same classification).
Whatever you then drag-drop-classify will then be placed in corresponding "browse-fields" for storage on the server.
code:
<html>
<head>
<title>Dra-släpp-fil</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style>
body {
	 background-color: #339999;
	font-family: Verdana, Arial, sans-serif;
	color:#FFFFFF;
	font-size:12pt;
	}
td {
	 background-color: #339999;
	font-family: Verdana, Arial, sans-serif;
	color:#FFFFFF;
	font-size:12pt;
	}
.list_tree{
	font-family: Verdana, Arial, sans-serif;
	color:#FFFFFF;
	font-size:12pt;
	line-height : 30pt;
}
.img{
	font-family: Verdana, Arial, sans-serif;
	color: #000000;
	font-size:8pt;
}
</style>
<SCRIPT LANGUAGE="Javascript1.2">
	<!--//
function reLoad(){
if(document.layers){
	location.reload();
	}	
}
function getObj(name) {
if (document.getElementById)
    return document.getElementById(name).style;
else if (document.all)
    return document.all[name].style;
else if (document.layers)
	return document.layers[name];
}
function grabLayer(layerName){
var button, Xpos, Ypos;
var x = getObj(layerName);
	button = window.event.button;
	Xpos = window.event.x;
	Ypos = window.event.y;
	if(button == 1){
                                x.data = document.frmSave.fileSave.value;
		moveLayer(layerName,Xpos,Ypos);
	}
}
function moveLayer(layerName,Xpos,Ypos){
var x = getObj(layerName);
		x.left = (Xpos - 22);
		x.top = (Ypos - 10);
		window.event.returnValue = false;
}
function getData(layerName){
var dataContainer;
var x = getObj(layerName);
	//this is a "home-construction, I have set a "style-attribute" that holds the path, 
	//then I access it this way, works for me ;-)"
    dataContainer = x.data;
	//this is just a check on what the container holds at the moment.
	alert(dataContainer);
    document.frmSave.txtClass1.value = dataContainer;
	// here lies the problem, I can retrieve the value, but not set it, 
	//the part above works, but not this...
	document.frmSave.fileSave.value = dataContainer;
}
function showData(){
alert(document.frmSave.fileSave.value);
}
	//-->
    </SCRIPT>
</head>
<body bgcolor="#FFFFFF" text="#000000" topmargin="0" leftmargin="0" onResize="reLoad();">
<img src="images/comp.gif" id="image1" width="44" height="41" alt="" border="0" onMouseMove="javascript:grabLayer('image1');" onMouseUp="javascript:getData('image1');" style="position:absolute; left:20px; top:200px; width:44px; height:41px; z-index:21; data:no valid path;">
<table width="100%" height="100%" border="1" cellpadding="0" cellspacing="0">
  <tr> 
    <td height="37" valign="top" colspan="3"><h3>Test of drag 'n drop</h3></td>
  </tr>
  <tr> 
    <td width="19%" height="100%" valign="top">
    <h5>Sök fram bilden du vill registrera.</h5>
    <form name="frmSave" action="javascript:showData();" enctype="multipart/form-data">
    <!--
	If I uncomment this input, and comment out the "browse-field" at the end of the form,
	the script works, but that rules out listing several files via the filesystem object,
	which would be nice to have as an option...
	<input type="file" name="fileSave" size="20" accept="image/jpeg,image/gif,image/x-png">
	-->
    </td>
    <td width="30%" valign="top"> 
      <dl class="list_tree"> 
        <dt class="list_tree">item 1</dt>
        <dd>item 2a</dd>
        <dt>item 3</dt>
        <dd>item 3a</dd>
        <dt>item4</dt>
        <dd>item4a</dd>
		<dd>item4b</dd>
		<dd>item4c</dd>
        <dt>item5</dt>
        <dd>item 5a</dd>
		<dd>item 5b</dd>
		<dd>item 5c</dd>
      </dl>
    </td>
    <td width="51%" valign="top">
    <h5>Registreringsformulär</h5>
    <form name="frmSave" action="javascript:showData();" enctype="multipart/form-data">
    <input name="txtClass1" type="text" size="30"><br>
    <input name="txtClass2" type="text" size="30"><br>
    <input name="txtClass3" type="text" size="30"><br>
    <input name="txtClass4" type="text" size="30"><br>
	<!-- If the one above is used, this should be commented out -->
	<input type="file" name="fileSave" size="20">
    <input type="submit" value="Spara">
    </form>
    </td>
  </tr>
</table>
</body>
</html>
                  
                  
-{ a vibration is a movement that doesn't know which way to go }-
[This message has been edited by DmS (edited 10-23-2001).]
[This message has been edited by DmS (edited 10-23-2001).]