function image() {
};

image = new image();
number = 0;

image[number++] = "<img src='randomimages-environmental/ecmhead1.jpg' border='0' alt='Environmental Management Policy header with ECM logo and photomontage'>"
image[number++] = "<img src='randomimages-environmental/ecmhead2.jpg' border='0' alt='Environmental Management Policy header with ECM logo and photomontage'>"
image[number++] = "<img src='randomimages-environmental/ecmhead3.jpg' border='0' alt='Environmental Management Policy header with ECM logo and photomontage'>"
image[number++] = "<img src='randomimages-environmental/ecmhead4.jpg' border='0' alt='Environmental Management Policy header with ECM logo and photomontage'>"
image[number++] = "<img src='randomimages-environmental/ecmhead5.jpg' border='0' alt='Environmental Management Policy header with ECM logo and photomontage'>"
image[number++] = "<img src='randomimages-environmental/ecmhead6.jpg' border='0' alt='Environmental Management Policy header with ECM logo and photomontage'>"
image[number++] = "<img src='randomimages-environmental/ecmhead7.jpg' border='0' alt='Environmental Management Policy header with ECM logo and photomontage'>"
image[number++] = "<img src='randomimages-environmental/ecmhead8.jpg' border='0' alt='Environmental Management Policy header with ECM logo and photomontage'>"
image[number++] = "<img src='randomimages-environmental/ecmhead9.jpg' border='0' alt='Environmental Management Policy header with ECM logo and photomontage'>"
image[number++] = "<img src='randomimages-environmental/ecmhead10.jpg' border='0' alt='Environmental Management Policy header with ECM logo and photomontage'>"
image[number++] = "<img src='randomimages-environmental/ecmhead11.jpg' border='0' alt='Environmental Management Policy header with ECM logo and photomontage'>"
image[number++] = "<img src='randomimages-environmental/ecmhead12.jpg' border='0' alt='Environmental Management Policy header with ECM logo and photomontage'>"

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

document.write(image[increment]);