function setPageColour(colour1, colour2)

{

  var classes;

  var els = document.getElementsByTagName("*");

  for (i=0; i<els.length; i++)

  {

    classes = String(els[i].className).split(' ');

    for (j=0; j<classes.length; j++)

    {

      if (classes[j]=='bgColourChangable') {

        els[i].style.backgroundColor = colour1;

        els[i].style.color = colour2;

      } else if (classes[j]=='colourChangable') {

        els[i].style.color = colour1;

      } else if (classes[j]=='invertedColourChangable') {

        els[i].style.color = colour2;

      } else if (classes[j]=='borderColourChangable') {

        els[i].style.borderTopColor = colour1;

        els[i].style.borderRightColor = colour1;

        els[i].style.borderBottomColor = colour1;

        els[i].style.borderLeftColor = colour1;

      }

    }

  }

}



var currentColour = 0;



var colours = [

    ['#ca3500', '#FFFFFF'],

    ['#700026', '#FFFFFF'],

    ['#196a09', '#FFFFFF'],

    ['#15023d', '#FFFFFF'],

    ['#AAAAAA', '#000000'],

    ['#d7d700', '#000000'],

    ['#25c19a', '#000000'],

    ['#703a00', '#FFFFFF'],

	['#8001d7', '#f1bbf3'],

    ['#facd00', '#330973'],

	['#3d413f', '#ff8000'],

	['#ff11d0', '#ffffff'],

    ['#000000', '#FFFFFF']

              ];



function nextColour()

{

    currentColour++;

    if (currentColour>colours.length-1)

        currentColour = 0;

    setPageColour(colours[currentColour][0], colours[currentColour][1]);

}