[bshp]

задание - написать конвертер валют. нашёл xml от госбанка с курсом. проблема в том что не знаю как связать документы таким образом чтобы функция получала курс из xml.

<!-- vhod -->
<SCRIPT LANGUAGE="JavaScript">

function roundToPennies(n)
{
   pennies = n * 100;
 
   pennies = Math.round(pennies);
 
   strPennies = "" + pennies;
   len = strPennies.length;
 
   first = strPennies.substring(0, len - 2) + ".";
   last = strPennies.substring(len - 2, len);
 
   if(first == ".")
   {
      first = "0."
   }
 
   if(last.length == 1)
   {
      last += "0";
   }
   return first + last;
}
//LEI
function ComputeMDL()
{
   MDL_countValue = document.forms['MoneyForm'].elements['MDL_box'].value;
   
   curs_USDValue = document.forms['MoneyForm'].elements['USD_curs'].value;
   
   curs_EURValue = document.forms['MoneyForm'].elements['EUR_curs'].value;
     
 
   {
      Money = eval(MDL_countValue);
 
      {
         cU = eval(curs_USDValue);
         cE = eval(curs_EURValue);
		 
		 count_USD = Money / cU;
		 count_EUR = Money / cE;

 
         document.forms['0'].elements['USD_box'].value = roundToPennies(count_USD);
		 document.forms['0'].elements['EUR_box'].value = roundToPennies(count_EUR);
     }
   }
}

//DOLLAR
function ComputeUSD()//-->
{
   USD_countValue = document.forms['MoneyForm'].elements['USD_box'].value;
   
   
   
   curs_USDValue = document.forms['MoneyForm'].elements['USD_curs1'].value;
   
   curs_EURValue = document.forms['MoneyForm'].elements['EUR_curs1'].value;
     
 
   {
      Money = eval(USD_countValue);
 
      {
         cD = eval(curs_USDValue);
         cE = eval(curs_EURValue);
		 
		 count_MDL = Money * cD;
		 count_EUR = count_MDL / cE;

 
         document.forms['0'].elements['MDL_box'].value = roundToPennies(count_MDL);
		 document.forms['0'].elements['EUR_box'].value = roundToPennies(count_EUR);
     }
   }
}

//EURO
function ComputeEUR()//-->
{
   EUR_countValue = document.forms['MoneyForm'].elements['EUR_box'].value;  
   curs_USDValue = document.forms['MoneyForm'].elements['USD_curs2'].value;
   curs_EURValue = document.forms['MoneyForm'].elements['EUR_curs2'].value;
     
 
   {
      Money = eval(EUR_countValue);
 
      {
         cD = eval(curs_USDValue);
         cE = eval(curs_EURValue);
		 
		 count_MDL = Money * cE;
		 count_USD = count_MDL / cD;

 
         document.forms['0'].elements['MDL_box'].value = roundToPennies(count_MDL);
		 document.forms['0'].elements['USD_box'].value = roundToPennies(count_USD);
     }
   }
}

function clean_fields()//-->
{
		 document.forms['0'].elements['MDL_box'].value = '';
		 document.forms['0'].elements['USD_box'].value = '';
		 document.forms['0'].elements['EUR_box'].value = '';
 }

// -->
</SCRIPT>

<CENTER>
<H1>&nbsp;</H1>
<H1>&nbsp;</H1>
<FORM NAME="MoneyForm">
  <p>&nbsp;</p>
  <h1>Convertor valutar</h1>
  <table width="270" height="158" border="0">
    <tr>
      <td width="33%" height="62"><div align="center"><img src="flaags/flag_md_big.gif" width="103" height="58" /></div></td>
      <td width="67%"><input name="MDL_box" type="text" onClick="clean_fields()" onKeyUp="ComputeMDL()" size="20" />
        <input type="hidden" name="EUR_curs" value="16.50" />
        <input type="hidden" name="USD_curs" value="12.40" /></td>
      </tr>
    <tr>
	
      <td height="62"><div align="center"><img src="flaags/us-lgflag.gif" width="103" height="58" /></div></td>
      <td><input type="Text" name="USD_box" size="20"  onkeyup="ComputeUSD()" onClick="clean_fields()" />
	    <input type="hidden" name="EUR_curs1" value="16.50" />
        <input type="hidden" name="USD_curs1" value="12.40" />      </td>
      </tr>
    <tr>
      <td height="60"><div align="center"><img src="flaags/EU.jpg" width="103" height="58" /></div></td>
      <td><input type="text" name="EUR_box" size="20"  onKeyUp="ComputeEUR()" onClick="clean_fields()" />
        <input type="hidden" name="EUR_curs2" value="16.50" />
        <input type="hidden" name="USD_curs2" value="12.40" /></td>
      </tr>
  </table>

</FORM>
</CENTER>