function swapImgRestore() { //v3.0
  var i,x,a=document.sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function preloadImages() {
  var d=document; 
  if(d.images){ 
    if(!d.p) 
      d.p=new Array();
    var i
    var j=d.p.length
    var a=preloadImages.arguments; 
    for(i=0; i<a.length; i++)
      if (a[i].indexOf("#")!=0) {
      d.p[j]=new Image; 
      d.p[j++].src=a[i];
    }
  }
}

function swapImage() { //v3.0
  var i,j=0,x,a=swapImage.arguments; document.sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=findObj(a[i]))!=null){document.sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function isDate(dateStr)
{
  var datePat = /^(\d{1,2})(\/|-)(\d{1,2})(\/|-)(\d{4})$/;
  var matchArray = dateStr.match(datePat); // is the format ok?

  if (matchArray == null)
  {
    alert("Please enter date as either mm/dd/yyyy or mm-dd-yyyy.");
    return false;
  }

  month = matchArray[1]; // parse date into variables
  day = matchArray[3];
  year = matchArray[5];

  if (month < 1 || month > 12)  // check month range
  {
    alert("Month must be between 1 and 12.");
    return false;
  }

  if (day < 1 || day > 31)
  {
    alert("Day must be between 1 and 31.");
    return false;
  }

  if ((month==4 || month==6 || month==9 || month==11) && day==31)
  {
    alert("Month "+month+" doesn`t have 31 days!")
    return false;
  }

  if (month == 2) // check for february 29th
  {
    var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
    if (day > 29 || (day==29 && !isleap))
    {
      alert("February " + year + " doesn`t have " + day + " days!");
      return false;
    }
  }
  return true; // date is valid
}
function isEmailAddr(email)
{
  var result = false
  var theStr = new String(email)
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}
function mailpage()
{
mail_str = "mailto:?subject=Take a look at the " + document.title;
mail_str += "&body=Page title: " + document.title;
mail_str += ". Web Address: " + location.href; 
location.href = mail_str;
}

function openWindow(link, name, variables) {
	window.open(link, name, variables);
}

function isNumeric(strString) {
//  check for valid numeric strings	
  var strValidChars = "0123456789.-";
  var strChar;
  var blnResult = true;
  if (strString.length == 0)
    return false;
//  test strString consists of valid characters listed above
  for (i = 0; i < strString.length && blnResult == true; i++) {
    strChar = strString.charAt(i);
    if (strValidChars.indexOf(strChar) == -1)
      blnResult = false;
  }
  return blnResult;
}


function formatCurrency(num) {
num = num.toString().replace(/\$|\,/g,'');
if(isNaN(num))
num = "0";
sign = (num == (num = Math.abs(num)));
num = Math.floor(num*100+0.50000000001);
cents = num%100;
num = Math.floor(num/100).toString();
if(cents<10)
cents = "0" + cents;
for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
num = num.substring(0,num.length-(4*i+3))+','+
num.substring(num.length-(4*i+3));
return (((sign)?'':'-') + '$' + num + '.' + cents);
}

function stripCurrency(strFormattedNumber) {
  var objRegExp = /\(/;
  var strMinus = '';
  strFormattedNumber = '' + strFormattedNumber;
  //check if negative
  if (objRegExp.test(strFormattedNumber)) {
    strMinus = '-';
  }

  objRegExp = /\)|\(|[,]/g;
  
  strFormattedNumber = strFormattedNumber.replace(',','');
  
  if (strFormattedNumber.indexOf('$') >= 0) {
    strFormattedNumber = strFormattedNumber.substring(1, strFormattedNumber.length);
  }
  
  if (isNumeric(strFormattedNumber))
    return eval(strFormattedNumber);
  else
    return 0;
}