var x,y;
function getWindowWidth()
{
  if (self.innerHeight) // all except Explorer
  {
    x = self.innerWidth;
    y = self.innerHeight;
  }
  else if (document.documentElement && document.documentElement.clientHeight)
    // Explorer 6 Strict Mode
  {
    x = document.documentElement.clientWidth;
    y = document.documentElement.clientHeight;
  }
  else if (document.body) // other Explorers
  {
    x = document.body.clientWidth;
    y = document.body.clientHeight;
  }
}  

function MM_findObj(n, d)
{ //v4.01
  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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n);
  return x;
}

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

function MM_preloadImages()
{ //v3.0
 var d=document;
 if(d.images)
 {
   if(!d.MM_p) d.MM_p=new Array();
   var i,j=d.MM_p.length,a=MM_preloadImages.arguments;
   for(i=0; i<a.length; i++)
     if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}
 }
}

function numbersonly(myfield, e, dec)
{
  var key;
  var keychar;

  if (window.event)
     key = window.event.keyCode;
  else if (e)
     key = e.which;
  else
     return true;
  
  keychar = String.fromCharCode(key);

  // control keys
  if ((key==null) || (key==0) || (key==8) || 
      (key==9) || (key==13) || (key==27) )
  {
    return true;
  }
  else if ((("0123456789").indexOf(keychar) > -1)) // numbers
  {
    return true;
  }
  else if (keychar == ".") // decimal point
  {
    return true;
  }
  else
  {
    return false;
  }
}

function textonly(myfield, e, dec)
{
  var key;
  var keychar;

  if (window.event)
     key = window.event.keyCode;
  else if (e)
     key = e.which;
  else
     return true;
  
  keychar = String.fromCharCode(key);

  // control keys
  if ((key==null) || (key==0) || (key==8) || 
      (key==9) || (key==13) || (key==27) )
  {
    return true;
  }
  else if ((("0123456789").indexOf(keychar) > -1)) // numbers
  {
    return false;
  }
  else
  {
    return true;
  }
}

function isDate (day,month,year)
{
  if (month == 2)
  {
    if((year % 4) == 0 && (year != 1900))
    {
      if (day > 29) { return false; }
      else { return true; }
    }
    else
    {
      if (day > 28) { return false; }
      else { return true; }
    }
  }
  else if ((month == 4) || (month == 6) || (month == 9) || (month == 11))
  { if (day > 30) { return false; } else { return true; } }
  else { if (day > 31) { return false; } else {return true; } }
}

function popUp(url, picWidth, picHeight, central)
{
  var winLeft = (screen.width - picWidth) / 2;
  var winUp = (screen.height - picHeight) / 2;

  if (central == 0)
  {
    var winLeft = 0;
    var winUp = 0;
  }
  
  window.open(url,'','width='+picWidth+',height='+picHeight+',top='+winUp+',left='+winLeft);
}