function imagetext() {
};

imagetext = new imagetext();
number = 0;

// imagetextArray
imagetext[number++] = "<img src='fillPics/fill_01.jpg' width='37' height='400' border='0'>";
imagetext[number++] = "<img src='fillPics/fill_02.jpg' width='37' height='400' border='0'>";
imagetext[number++] = "<img src='fillPics/fill_03.jpg' width='37' height='400' border='0'>";
imagetext[number++] = "<img src='fillPics/fill_04.jpg' width='37' height='400' border='0'>";
imagetext[number++] = "<img src='fillPics/fill_05.jpg' width='37' height='400' border='0'>";
imagetext[number++] = "<img src='fillPics/fill_06.jpg' width='37' height='400' border='0'>";
imagetext[number++] = "<img src='fillPics/fill_07.jpg' width='37' height='400' border='0'>";
imagetext[number++] = "<img src='fillPics/fill_08.jpg' width='37' height='400' border='0'>";
imagetext[number++] = "<img src='fillPics/fill_09.jpg' width='37' height='400' border='0'>";
imagetext[number++] = "<img src='fillPics/fill_10.jpg' width='37' height='400' border='0'>";
// keep adding items here...

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

document.write(imagetext[increment]);