Inputbox in string.

Var Naamstring = document.getElementById("naam").value;
function resolutie()
{
document.write ("Resolutie: ")
document.write (screen.availWidth)
document.write ("x")
document.write (screen.availHeight)
}
function bits()
{
document.write ("Aantal Bits: ")
document.write (screen.colorDepth)
}
function pixel()
{
document.write ("Pixel Diepte: ")
document.write (screen.pixelDepth)
}
function history()
{
document.write ("Lengte Van De Geschiedenis: ")
document.write (history.length)
}
function CheckNaam()
{
document.write (Naamstring)
}

Var Naamstring = document.getElementById("naam").value;
function resolutie()
{
document.write ("Resolutie: ")
document.write (screen.availWidth)
document.write ("x")
document.write (screen.availHeight)
}
function bits()
{
document.write ("Aantal Bits: ")
document.write (screen.colorDepth)
}
function pixel()
{
document.write ("Pixel Diepte: ")
document.write (screen.pixelDepth)
}
function history()
{
document.write ("Lengte Van De Geschiedenis: ")
document.write (history.length)
}
function CheckNaam()
{
document.write (Naamstring)
}

	<input type="text" name="naam" id="naam" />
	<input type="button" value="Check Naam" OnClick="CheckNaam()" />

<input type="text" name="naam" id="naam" />
	<input type="button" value="Check Naam" OnClick="CheckNaam()" />