function text() {
};

text = new text();
number = 0;

// textArray
text[number++] = "Robore has the largest fleet of Brokks in the UK"
text[number++] = "Robore has an extensive range of wholly-owned plant and equipment"
text[number++] = "All Robore plant is maintained by skilled fitters in a fully-equipped workshop"
text[number++] = "Robore has over 100 CITB/CSCS trained operators"
text[number++] = "All Robore vehicles are fully equipped with standard plant and equipment"
text[number++] = "Robore has over 60 vans to respond rapidly, all fitted with trackers"
text[number++] = "Robore undertakes work internationally"
text[number++] = "Robore management has over 100 years of combined experience"
text[number++] = "Robore has management expertise second to none"
// keep adding items here...

increment = Math.floor(Math.random() * number);

document.write(text[increment]);