bramstein

var subpixelWordSpacing = false;

if (document.defaultView && document.defaultView.getComputedStyle) {
	// Store the original word spacing on the document element
	var originalWordSpacing = document.defaultView.getComputedStyle(document.documentElement, null).wordSpacing;
	
	// Set the word-spacing to half a pixel
	document.documentElement.style.wordSpacing = '0.5px';
	
	// This will return either 0px or 1px if sub-pixel word-spacing is not supported, otherwise