//
	// check the txtPrice to make sure it is a valad currency
	//
	function isCurrency(f)
	{
		var nNum = 0;			// Total numbers for currency value.
		var nDollarSign = 0;		// Total times a dollar sign occurs.
		var nDecimal = 0;		// Total times a decimal point occurs.
		var nCommas = 0;		// Total times a comma occurs.
		var txtLen;			// Length of string passed.
		var xTxt;			// Assigned object passed.
		var sDollarVal;			// Assigned dollar amount with or without commas.
		var bComma;				
		var decPos;			// Assigned value of numbers or positions after decimal point.
		var nNumCount = 0;		// Total number between commas.
		var i;				// For forloop indexing.
		var x;				// Assigned each indivual character in string.

		// Set the xTxt variable to the object passed to this function.
		// Assign the length of the string to txtLen.
		//xTxt = f.txt;
		xTxt = document.frmForm.txtPrice;
		txtLen = xTxt.value.length

		for(i = 0; i < txtLen; i++)
		{
			// Assign charater in substring to x.
			x = xTxt.value.substr(i, 1);

			if(x == "$")
				nDollarSign = nDollarSign + 1; // Sum total times dollar sign occurs.
			else if(x == ".")
				nDecimal = nDecimal + 1; // Sum total times decimal point occurs.
			else if(x == ",")
				nCommas = nCommas + 1; // Sum total times comma occurs.
			else if(parseInt(x) >= 0 || parseInt(x) <= 9)
				nNum = nNum + 1; // If the character is a number sum total times a number occurs.
			else
			{
				// Error occurs if any other character value is in the string
				// othere then the valid characters.
				//alert("ERROR! \n\nYou have entered an illegal value!\nPlease enter only: Dollar" +
				//	  " Signs, Commas, Decimal Points, and numbers between 0...9!");
				errString = errString + "You have entered an illegal value!\nPlease enter only: Dollar" +
					" Signs, Commas, Decimal Points, and numbers between 0...9!";
				return false;
			} // end else
		} // end for

		if(nDollarSign > 1)
		{
			//alert("ERROR! \n\nYou have entered more then one dollar sign!\nPlease only enter one!");
				errString = errString + "You have entered more then one dollar sign";
				return false;
		} // end if

		if(nDecimal > 1)
		{
			//alert("ERROR! \n\nYou have entered more then one decimal point!\nPlease only enter one!");
			errString = errString + "You have entered more then one decimal point";
			return false;
		} // end if

		if(nDollarSign == 1)
		{
			// Make sure dollar sign in the first character in string
			// if there is a dollar sign present.
			if(xTxt.value.indexOf("$") != 0)
			{
				//alert("ERROR!  \n\nThe dollar sign you entered is not in the correct position!");
				errString = errString + "The dollar sign you entered is not in the correct position";
				return false;
			} // end if
		}// end if

		if(nDecimal == 1)
		{
			// Get the number of numbers after the decimal point in
			// the string if there is a decimal point present
			decPos = (txtLen - 1) - xTxt.value.indexOf(".");

			// Floating point cannot be more then two.
			// Valid format after decimal point.
			/**********************************/
			/*   $#.##, $#.#, $.#, $#., $.##  */
			/**********************************/
			if(decPos > 2)
			{
				//alert("ERROR! \n\nThe decimal point you entered is not in the correct position!");
				errString = errString + "The decimal point you entered is not in the correct position";
				return false;
			} // end if
		} // end if

		if(nCommas == 0)
		{
			// If no commas are present value is a valid US
			// currency.
			return true;
		}
		else
		{
			// Get total number of dollar number(s), removing
			// floating point numbers or cents.
			nNum = nNum - decPos;

			// Determine if dollar sign is in string so to be 
			// removed.
			// After determining dollar sign, assign sDollarVal
			// numbers and comma(s)
			if(xTxt.value.indexOf("$", 0) == 0)
				sDollarVal = xTxt.value.substr(1, (nNum + nCommas));
			else
				sDollarVal = xTxt.value.substr(0, (nNum + nCommas));

			// Determine if a zero is the first number or if a
			// comma is the first or last character in the string.
			if(sDollarVal.lastIndexOf("0", 0) == 0 )
			{
				//alert("ERROR! \n\nYou cannot start the dollar amount out with a zero!");
				errString = errString + "You cannot start the dollar amount out with a zero";
				return false;
			}
			else if(sDollarVal.lastIndexOf(",", 0) == 0)
			{
				//alert("ERROR! \n\nYou cannot start the dollar amount out with a comma!");
				errString = errString + "You cannot start the dollar amount out with a comma";
				return false;
			}
			else if(sDollarVal.indexOf(",", (sDollarVal.length - 1)) == (sDollarVal.length - 1))
			{
				//alert("ERROR! \n\nYou cannot end the dollar amount with a comma!");
				errString = errString + "You cannot end the dollar amount with a comma";
				return false;
			}
			else
			{
				// Initialize bComma indicating a comma has not been
				// occured yet.
				bComma = false;
				for(i = 0; i < sDollarVal.length; i++)
				{
					// Assign charater in substring to x.
					x = sDollarVal.substr(i, 1);

					if(parseInt(x) >= 0 || parseInt(x) <= 9)
					{
						// If x is a number add one to the number counter.
						nNumCount = nNumCount + 1;

						// Sense comma(s) are present number counter cannot
						// be more then three before the first or next comma.
						if(nNumCount > 3)
						{
							//alert("ERROR! \n\nYou have a mis-placed comma!");
							errString = errString + "You have a mis-placed comma";
							return false;
						} // end if
					}
					else
					{
						// If the number counter is less then three and
						// the comma indicator is true the comma is either
						// mis-placed or there are not enough values.
						if(nNumCount != 3 && bComma)
						{
							//alert("ERROR! \n\nYou have a mis-placed comma!");
							errString = errString + "You have a mis-placed comma";
							return false;
						} // end if

						// Reset the number counter back to zero.
						nNumCount = 0;

						// Set the comma indicator to true indicating
						// that the first comma has been found and that
						// there now MUST be three numbers after each
						// comma until the loop hits the end.
						bComma = true;
					} // end if
				} // end for

				// Determine if after the loop ended that there
				// was a total of three final numbers after the
				// last comma.
				if(nNumCount != 3 && bComma)
				{
					//alert("ERROR! \n\nYou have a mis-placed comma!");
					errString = errString + "You have a mis-placed comma";
					return false;
				} // end if
			} // end if
		} // end if

		// 
		// make sure value is above .01
		//

		// Return true indicating that the value is a valid
		// currency.
		return true;
	}