sets how white space is handled

white-space: ***;

Browser
Internet Explorer5.5 Firefox Opera

The white-space property sets how white space (spaces and line breaks) is handled.

p {
white-space: nowrap;
}

Property Value Explanation
white-space normal multiple white space is collapsed into a single space (default)
nowrap prevents a line breakInternet Explorer5.5FirefoxOpera
pre preserves white spacesInternet Explorer6FirefoxOpera
(MSIE is supported in Standards mode only)

Example

nowrap

<html>
<head>
<title>TAG index</title>

<style type="text/css">

#example { white-space: nowrap; }

</style>

</head>
<body>

<p>Some text some text some text. Some text ...</p>

<p id="example">Some text some text some text. Some text ...</p>

</body>
</html>
Output
Example page

pre

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

<style type="text/css">

#example { white-space: pre; }

</style>

</head>
<body>

<p>The text to which the pre value is specified.</p>
<div id="example">
function PopTag() { 

	if (!document.getElementById) {

		alert("Hello");
		return;

	}

}
</div>

<p>The text to which the pre value is not specified.</p>
<div>
function PopTag() { 

	if (!document.getElementById) {

		alert("Hello");
		return;

	}

}
</div>

</body>
</html>
Output

The text to which the pre value is specified.

function PopTag() { if (!document.getElementById) { alert("Hello"); return; } }

The text to which the pre value is not specified.

function PopTag() { if (!document.getElementById) { alert("Hello"); return; } }