if(	typeof(gpi)  == "undefined" ||  
	typeof(opex) == "undefined" ||
	typeof(purchase_price)  == "undefined") 
{
	error('Cannot load widget because "<b>gpi</b>", "<b>opex</b>", or "<b>purchase_price</b>" is missing');
} 
else
{
	var m_vacancy_rate        = (typeof(vacancy_rate)  		== "undefined" || !isInteger(vacancy_rate) ) 						? 0 : parseInt(vacancy_rate);
	var m_holding_period      = (typeof(holding_period) 	== "undefined" || !isInteger(holding_period) ) 						? 1 : parseInt(holding_period);
	var m_gpi_growth_rate     = (typeof(gpi_growth_rate)  	== "undefined" || !isInteger(gpi_growth_rate) ) 					? 0 : parseInt(gpi_growth_rate);
	var m_opex_growth_rate    = (typeof(opex_growth_rate)  	== "undefined" || !isInteger(opex_growth_rate) ) 					? 0 : parseInt(opex_growth_rate);
	var m_appreciation_rate   = (typeof(appreciation_rate)  == "undefined" || !isInteger(appreciation_rate) ) 					? 0 : parseInt(appreciation_rate);
	
	if (typeof(financing) == "undefined")
		error('Mortgage data is missing');
	else if (m_holding_period <= 0) 	 
		error('Holding period must be greater than 0');
	else
	{
		
		var financing_string ="___";
		
		for(var i=0; i< financing.length; i++)
			financing_string += financing[i].principal + "_" + financing[i].interest_rate + "_" + financing[i].amortization_period + "_" + financing[i].interest_only + " ";
		
		var hash 	= window.location.href.indexOf("#");
		var limit   = ( hash == -1) ? window.location.href.length : window.location.href.substring(0, hash);
		var referer = window.location.href.substring(7, limit).replace(new RegExp(/\//g), " ");
		var url = 'http://www.redmol.com/analyzer/embed_data/' +  encodeURIComponent(referer) + '/' + gpi + '/' + opex + '/' + purchase_price + '/' + financing_string + '/' + m_vacancy_rate+ '/' + m_holding_period+ '/' + m_gpi_growth_rate+ '/' + m_opex_growth_rate+ '/' + m_appreciation_rate;
		var ihtml = '<iframe id="redmol_analyzer" width="500" height="300" frameborder="0" scrolling="no" src="' + url + '"></iframe>';
		document.write(ihtml);
		document.getElementById("redmol_analyzer").src = document.getElementById("redmol_analyzer").src;
	}
}


function error(msg)
{
	var redmol_logo  = '';
	redmol_logo 	+= '<div style="margin-bottom:5px;">';
	redmol_logo		+= 'Powered by <a href="http://www.redmol.com/"> <img border="0" src="http://www.redmol.com/system/pics/redmol_tiny.gif" alt="Real Estate Investment Analyzer by RedMol.com"></a>'; 	
	redmol_logo		+= '</div>';
	var html = redmol_logo + '<div><span style="color:red;">' + msg + '<span></div>';
	document.write(html);
}


 function validateInt()
   {
      var o = document.frmInput.txtInput;
      switch (isInteger(o.value))
      {
         case true:
            alert(o.value + " is an integer")
            break;
         case false:
            alert(o.value + " is not an integer")
      }
   }

   function validateRange()
   {
      var s = document.frmInput.txtInput.value;
      var A = document.frmInput.txtA.value;
      var B = document.frmInput.txtB.value;

      switch (isIntegerInRange(s, A, B))
      {
         case true:
            alert(s + " is in range from " + A + " to " + B)
            break;
         case false:
            alert(s + " is not in range from " + A + " to " + B)
      }
   }

// isIntegerInRange (STRING s, INTEGER a, INTEGER b)
   function isIntegerInRange (s, a, b)
   {   if (isEmpty(s))
         if (isIntegerInRange.arguments.length == 1) return false;
         else return (isIntegerInRange.arguments[1] == true);

      // Catch non-integer strings to avoid creating a NaN below,
      // which isn't available on JavaScript 1.0 for Windows.
      if (!isInteger(s, false)) return false;

      // Now, explicitly change the type to integer via parseInt
      // so that the comparison code below will work both on
      // JavaScript 1.2 (which typechecks in equality comparisons)
      // and JavaScript 1.1 and before (which doesn't).
      var num = parseInt (s);
      return ((num >= a) && (num <= b));
   }

   function isInteger (s)
   {
      var i;

      if (isEmpty(s))
      if (isInteger.arguments.length == 1) return 0;
      else return (isInteger.arguments[1] == true);

      for (i = 0; i < s.length; i++)
      {
         var c = s.charAt(i);

         if (!isDigit(c)) return false;
      }

      return true;
   }

   function isEmpty(s)
   {
      return ((s == null) || (s.length == 0))
   }

   function isDigit (c)
   {
      return ((c >= "0") && (c <= "9"))
   }