var numImages=1; //total number of images to be displayed
var currentThn="image"; //default
var currentNum=1;

function init(currNumImages)
{
  numImages=currNumImages;
}

function displayImage(imgName, imgNumber)
{
 parent.current.location.href=("current"+imgNumber+".html");
 //ie only  - hilight border
 document[(currentThn+currentNum)].border = 0; 
 document[(imgName+imgNumber)].border=5;
 currentThn=imgName; //set to current hilited THN
 currentNum=imgNumber;
}

function highlightImage(imgNumber)
{
  //ie only 
 document[('image'+currentNum)].border=0; 
 document[('image'+imgNumber)].border=5;
 currentNum=imgNumber;
}


function displayNext()
{
 temp=currentNum; //get current image number into a temp var
 temp++;
 if(temp>numImages)
 {
  temp=1;
 }
 displayImage('image', temp); //hardcored image name for now
 //this takes care of updating value of currentNum
}


function displayPrevious()
{
 temp=currentNum;
 temp--;
 if (temp<1)
 { temp=numImages; }
 displayImage('image', temp);
}