var sAgent = window.navigator.userAgent;
var nVer   = parseInt(sAgent.charAt(sAgent.indexOf("/")+1),10);
var isIE   = false;
if ((nVer > 3) && (sAgent.indexOf("MSIE") > 0)) {isIE = true;}

function updDisp(x) {
  var c = eval('document.forms["frmPrev"].chk'+x+'.value');
  if (c == 'on') {
    eval('document.all.divPrev'+x+'.style.display = "none"');
  } else {
    eval('document.all.divPrev'+x+'.style.display = "on"');
  }
}

function updTxt(y) {
  var sIT = '+ '+eval('document.forms["frmPrev"].txt'+y+'.value')
  eval('document.all.divPrev'+y+'.innerText = sIT');
}
  
function tier1Menu(objMenu,objImage) {
  if (objMenu.style.display == "none") {
    objMenu.style.display = "";
    objImage.src = imgminus.src;
  } else {
    objMenu.style.display = "none";
    objImage.src = imgplus.src;
  }
}

function ChangeCursor(obj,str) {
  obj.style.cursor = str;
}

function goMenu(nMenu) {
  if (isIE && nMenu != 0) {
    eval('tier1Menu(menu'+nMenu+',img'+nMenu+')')
  }
}

var imgplus = new Image(9,9);imgplus.src="plus.gif"
var imgminus = new Image(9,9);imgminus.src="minus.gif"