var arr = [];
arr.push('<p>');

if (prices) {
	arr.push('Share price:<br/>');
	arr.push('<span class="large_copy">');
	arr.push('<span class="highlight">' + prices + 'p</span>&nbsp;'); //current price
	change < 0 ? arr.push('˅' + change + 'p') : arr.push('˄' + change + 'p'); //change
	arr.push('</span>');
}
else {
	arr.push('No share information available');
}

arr.push('</p>');
document.write(arr.join(''));