function chop(number, dp) {							 // Rounds number to "dp" decimal places.
	var times = Math.pow(10, dp) 				// makes times == 10^dp.
	number = (Math.round(number*times))/times;
	if (document.layers) { 					// Tidies Netscape 4.x appearance.
		if (number<1 && number >= 0) number = "0" + number; 	// makes .752 to 0.752
		if (number<0 && number >-1) {			 // makes -.367 to -0.367
			number *=-1;
			number = "-0" + number;
		} 					// End -1<x<0 hack
	}						 // End Netscape hack
	str = number + "";
	if (str.substr(str.length-2, 1) == "." && dp == "2") {
		str = str + "0";
	}
	return str;
}