sImgNms = new Array('home',
                    'about',
                    'projects',
		    'news',
		    'forsale',
		    'links',
                    'contact');

sOvrImg = new Array('images/home_on.gif',
                    'images/about_on.gif',
                    'images/projects_on.gif',
		    'images/news_on.gif',
		    'images/forsale_on.gif',
		    'images/links_on.gif',
                    'images/contact_on.gif');

sOutImg = new Array('images/home.gif',
                    'images/about.gif',
                    'images/projects.gif',
		    'images/news.gif',
		    'images/forsale.gif',
		    'images/links.gif',
                    'images/contact.gif');

                    
                    
sImgCnt = sImgNms.length;
sOvrPic = new Array(sImgCnt);
sOutPic = new Array(sImgCnt);

for (var i=0 ; i<sImgCnt ; i++)
{
  sOvrPic[i] = new Image;
  sOvrPic[i].src = sOvrImg[i];
  sOutPic[i] = new Image;
  sOutPic[i].src = sOutImg[i];
}

function sSwImg(sImgNum, sImgState)
{
  if (document.images)
  {
    var sImgName = sImgNms[sImgNum];
  
    if (sImgState == 1)
    {
      document[sImgName].src = sOvrPic[sImgNum].src;
    }
    else if (sImgState == 0)
    {
      document[sImgName].src = sOutPic[sImgNum].src;
    }
  }
}