HTC File does not work in firefox

I have a HTC file which work fine in Internet Explorer, but does not work in Firefox. Is there a way to change the HTC file so it will work in firefox?
the HTC file is:
<html XMLNS:NumericUpDown dir="ltr">
<PUBLIC:COMPONENT tagname="NumericUpDown" literalcontent=true >
<PUBLIC:PROPERTY name="valueTextBox" get="GetValueTextBox"/ >
<PUBLIC:ATTACH EVENT="oncontentready" ONEVENT="LoadThis()" />
<PUBLIC:PROPERTY name="textBoxValue" put="SetValue" get="GetValue"/ >
<PUBLIC:PROPERTY name="maxValue" value="1000"/ >
<PUBLIC:PROPERTY name="minValue" / >
<PUBLIC:PROPERTY name="jumpSize" value="0.05"/ >
<PUBLIC:PROPERTY name="imgUp" put="SetUp"/ >
<PUBLIC:PROPERTY name="imgDown" put="SetDown"/ >
<PUBLIC:PROPERTY name="imgClickedUp" put="SetClickedUp"/ >
<PUBLIC:PROPERTY name="imgClickedDown" put="SetClickedDown"/ >
<PUBLIC:PROPERTY name="width" put="SetWidth" get="GetWidth"/ >
<PUBLIC:PROPERTY name="height" put="SetHeight" get="GetHeight"/ >
<PUBLIC:EVENT ID = "valueChanged" NAME = "onValueChanged"/>
<SCRIPT LANGUAGE="JScript">

var clickedUpImage;
var clickedDownImage;
var upImage;
var downImage;
var prevValue;

function GetValueTextBox()
{
return document.getElementById('OddsValue');
}

function SetClickedUp(vValue)
{
clickedUpImage = vValue;
}

function SetClickedDown(vValue)
{
clickedDownImage = vValue;
}

function SetDown(vValue)
{
document.getElementById('imgDown').src = vValue;
downImage = vValue;
}

function SetUp(vValue)
{
document.getElementById('imgUp').src = vValue;
upImage = vValue;
}

function SetHeight(vValue)
{
document.getElementById('OddsValue').style.height = vValue;
document.getElementById('AllControl').height = vValue;
document.getElementById('imgUp').style.height = parseFloat(vValue) / 2 - 2;
document.getElementById('imgDown').style.height = parseFloat(vValue) / 2 - 2;

}

function GetHeight()
{
return document.getElementById('AllControl').height;
}

function SetWidth(vValue)
{
document.getElementById('AllControl').width = vValue;
document.getElementById('OddsValue').style.width = vValue - 12;
}

function GetWidth()
{
return document.getElementById('AllControl').width;
}

function SetValue(vValue)
{
document.getElementById('OddsValue').value = vValue;
}

function GetValue()
{
return parseFloat(document.getElementById('OddsValue').value).toFixed(2);
}

function LoadThis()
{
defaults.viewLink = document;
}

function ClickedUp()
{
if (!this.disabled)
{
var oldVal = document.getElementById('OddsValue').value;
if (oldVal == null ||
oldVal == '' ||
oldVal == ' ')
{
document.getElementById('OddsValue').value = 2;
}
else if ((parseFloat(parseFloat(oldVal) + GetIntervalSizeForUp(document.getElementById('OddsValue').value))) > parseFloat(this.maxValue))
{
alert('לא ניתן להעלות את הערך מעל ' + this.maxValue);
}
else
{
document.getElementById('OddsValue').value = parseFloat(parseFloat(oldVal) + GetIntervalSizeForUp(oldVal)).toFixed(2);
TextValueChanged();
}
}
}

function ClickedDown()
{
if (!this.disabled)
{
var oldVal = document.getElementById('OddsValue').value;
if (oldVal == null ||
oldVal == '' ||
oldVal == ' ')
{
document.getElementById('OddsValue').value = 2;
}
else if ((parseFloat(parseFloat(oldVal) - GetIntervalSizeForDown(document.getElementById('OddsValue').value))) < parseFloat(this.minValue))
{

alert('לא ניתן להוריד את הערך מתחת ל ' + this.minValue);
}
else
{
document.getElementById('OddsValue').value = parseFloat(parseFloat(oldVal) - GetIntervalSizeForDown(oldVal)).toFixed(2);
TextValueChanged();
}
}
}

function GetIntervalSizeForDown(oldValue)
{
oldValue = parseFloat(oldValue);
if (oldValue > 100)
{
return parseFloat("10");
}
else if (oldValue > 50)
{
return parseFloat("5");
}
else if (oldValue > 30)
{
return parseFloat("2");
}
else if (oldValue > 20)
{
return parseFloat("1");
}
else if (oldValue > 10)
{
return parseFloat("0.5");
}
else if (oldValue > 5)
{
return parseFloat("0.2");
}
else if (oldValue > 4)
{
return parseFloat("0.1");
}
else if (oldValue > 3)
{
return parseFloat("0.05");
}
else if (oldValue > 2)
{
return parseFloat("0.02");
}
else
{
return parseFloat("0.01");
}

}

function GetIntervalSizeForUp(oldValue)
{
oldValue = parseFloat(oldValue);
if (oldValue < 2)
{
return parseFloat("0.01");
}
else if (oldValue < 3)
{
return parseFloat("0.02");
}
else if (oldValue < 4)
{
return parseFloat("0.05");
}
else if (oldValue < 5)
{
return parseFloat("0.1");
}
else if (oldValue < 10)
{
return parseFloat("0.2");
}
else if (oldValue < 20)
{
return parseFloat("0.5");
}
else if (oldValue < 30)
{
return parseFloat("1");
}
else if (oldValue < 50)
{
return parseFloat("2");
}
else if (oldValue < 100)
{
return parseFloat("5");
}
else
{
return parseFloat("10");
}
}

function KeyUp()
{
oEvent = createEventObject();
oEvent.result = parseFloat(document.getElementById('OddsValue').value).toFixed(2);
valueChanged.fire(oEvent);
}

function TextValueChanged()
{
if (prevValue != document.getElementById('OddsValue').value)
{
prevValue = document.getElementById('OddsValue').value;
re = new RegExp('^[0-9]{0,}["."]?[0-9]{0,}');

if (document.getElementById('OddsValue').value != '')
{
if (document.getElementById('OddsValue').value.match(re)[0].length != document.getElementById('OddsValue').value.length)
{
alert('נא להזין ערך מספרי עבור היחס');
document.getElementById('OddsValue').value = '';
prevValue = '';
oEvent = createEventObject();
oEvent.result = 0;
valueChanged.fire(oEvent);
}
else
{
if (parseFloat(document.getElementById('OddsValue').value) > parseFloat(maxValue))
{
alert('לא ניתן להעלות את הערך מעל ' + this.maxValue);
document.getElementById('OddsValue').value = maxValue;
prevValue = maxValue;
oEvent = createEventObject();
oEvent.result = maxValue;
valueChanged.fire(oEvent);
}
else if(parseFloat(document.getElementById('OddsValue').value) < parseFloat(minValue))
{
alert('לא ניתן להוריד את הערך מתחת ל ' + this.minValue);
document.getElementById('OddsValue').value = minValue;
prevValue = minValue;
oEvent = createEventObject();
oEvent.result = minValue;
valueChanged.fire(oEvent);
}
else
{
this.value = parseFloat(document.getElementById('OddsValue').value).toFixed(2);
prevValue = document.getElementById('OddsValue').value;
oEvent = createEventObject();
oEvent.result = this.value;
valueChanged.fire(oEvent);
}
}
}
}
}

function SetInnerValue()
{
document.getElementById('OddsValue').value = document.value;
}

function ShowPointer()
{
this.style.cursor = "pointer";
}

function DownImageMouseDown()
{
document.getElementById("imgDown").src = clickedDownImage;
}

function UpImageMouseDown()
{
document.getElementById("imgUp").src = clickedUpImage;
}

function DownImageMouseUp()
{
document.getElementById("imgDown").src = downImage;
}

function UpImageMouseUp()
{
document.getElementById("imgUp").src = upImage;
}

function ShowArrow()
{
this.style.cursor = "arrow";

if (document.getElementById("imgUp").src != upImage)
{
document.getElementById("imgUp").src = upImage;
}

if (document.getElementById("imgDown").src != downImage)
{
document.getElementById("imgDown").src = downImage;
}
}

</SCRIPT>
</PUBLIC:COMPONENT>
<head>
</head>
<body>
<Table id="AllControl" cellpadding="0" cellspacing="0" border="0" width="100%">
<TR>
<TD>
<table cellpadding="0" cellspacing="0" border="0" width="100%" ID="Table1">
<TR>
<TD colspan="2"><img src="Transparent1px.gif" height="1px"></TD>
</TR>
<TR>
<TD height="8px"><img id="imgUp" src="" width="11px" height="100%" onclick="ClickedUp()" onMouseOver="ShowPointer()" onmouseout="ShowArrow()" onmousedown="UpImageMouseDown()" onmouseup="UpImageMouseUp()"></TD><TD><img src="Transparent1px.gif" width="1px"></TD>
</TR>
<TR>
<TD colspan="2"><img src="Transparent1px.gif" height="2px"></TD>
</TR>
<TR>
<TD height="8px"><img id="imgDown" src="" width="11px" height="100%" onclick="ClickedDown()" onMouseOver="ShowPointer()" onmouseout="ShowArrow()" onmousedown="DownImageMouseDown()" onmouseup="DownImageMouseUp()"></TD><TD><img src="Transparent1px.gif" width="1px"></TD>
</TR>
<TR>
<TD colspan="2"><img src="Transparent1px.gif" height="1px"></TD>
</TR>
</table>
</TD>
<TD width="100%">
<input id="OddsValue" type="text" id="OddsValue" NAME="OddsValue" onKeyUp="KeyUp()" onChange="TextValueChanged()" style="height:20px">
</TD>
</TR>
</Table>
</body>
</html>