function myfn(font)
{
var h = document.getElementsByTagName("BODY")[0];
var d = document.createElement("DIV");
var s = document.createElement("SPAN");

		d.appendChild(s);
		d.style.fontFamily = "sans-serif";		//font for the parent element DIV.
		s.style.fontFamily = "sans-serif";		//arial font used as a comparator.
		s.style.fontSize   = "72px";			//we test using 72px font size, we may use any size. I guess larger the better.
		s.innerHTML        = "mmmmmmmmmml";

		h.appendChild(d);
		 var defaultWidth   = s.offsetWidth;		//now we have the defaultWidth
		 var defaultHeight  = s.offsetHeight;	//and the defaultHeight, we compare other fonts with these.
		h.removeChild(d);

		/* test
		 * params:
		 * font - name of the font you wish to detect
		 * return: 
		 * f[0] - Input font name.
		 * f[1] - Computed width.
		 * f[2] - Computed height.
		 * f[3] - Detected? (true/false).
		 */
		h.appendChild(d);
		 var f = [];
		 f[0] = s.style.fontFamily = font;	// Name of the font
		 f[1] = s.offsetWidth;				// Width
		 f[2] = s.offsetHeight;				// Height
		h.removeChild(d);
		font = font.toLowerCase();
		f[3] = (f[1] != defaultWidth || f[2] != defaultHeight);	// Detected?
		return(f[3]);

}