var flag = 1;

function preloadImages() {
  if (document.images) {
    var imgFiles = preloadImages.arguments;
    var preloadArray = new Array();
    for (var i=0; i<imgFiles.length; i++) {
      preloadArray[i] = new Image;
      preloadArray[i].src = imgFiles[i];
    }
  }
}
function swapImage() {
  var i,j=0,objStr,obj,swapArray=new Array,oldArray=document.swapImgData;
  for (i=0; i < (swapImage.arguments.length-2); i+=3) {
    objStr = swapImage.arguments[(navigator.appName == 'Netscape')?i:i+1];
    if ((objStr.indexOf('document.layers[')==0 && document.layers==null) ||
        (objStr.indexOf('document.all[')   ==0 && document.all   ==null))
      objStr = 'document'+objStr.substring(objStr.lastIndexOf('.'),objStr.length);
    obj = eval(objStr);
    if (obj != null) {
      swapArray[j++] = obj;
      swapArray[j++] = (oldArray==null || oldArray[j-1]!=obj)?obj.src:oldArray[j];
      obj.src = swapImage.arguments[i+2];
    } 
  }
}

function next() {
	if(flag > 0 && flag < 10)flag++;
	if(flag == 10 || flag == 1){
		flag = 1;
		swapImage('document.pic','document.pic','1.jpg','swapImage1');
	}
	if(flag == 2)swapImage('document.pic','document.pic','2.jpg','swapImage2');
	if(flag == 3)swapImage('document.pic','document.pic','3.jpg','swapImage3');
	if(flag == 4)swapImage('document.pic','document.pic','4.jpg','swapImage4');
	if(flag == 5)swapImage('document.pic','document.pic','5.jpg','swapImage5');
	if(flag == 6)swapImage('document.pic','document.pic','6.jpg','swapImage6');
	if(flag == 7)swapImage('document.pic','document.pic','7.jpg','swapImage7');
	if(flag == 8)swapImage('document.pic','document.pic','8.jpg','swapImage8');
	if(flag == 9)swapImage('document.pic','document.pic','9.jpg','swapImage9');