1.Suppose i have 50 records in a matrix and using mapping i want to send only those records to BW which are selected.. how can we do this?
   appname.getCache().getDocument('MTX_DATA_XML').selectNodes('//record[@jsxselected="1"]');
2.
format 1:
<data jsxid="jsxroot">
<record jsxtext="Jame Paulis" jsxid="1" office="1018" status="Interview" experience="3" longivity="1" ></record>
<record jsxtext="James" jsxid="2" office="1019" status="GD" experience="3" longivity="2" ></record>
<data/>

 format 2:
<data>
<record>
<ID>1</ID>
<office>1018</office>
<status>Interview</status>
<experience>3</experience>
<longivity>1</longivity>
</record>
<record>
<ID>2</ID>
<office>1019</office>
<status>Group Discussion</status>
<experience>0</experience>
<longivity>3</longivity>
</record>
</data>
var nodeValueExp = objDoc.selectSingleNode("http://record[ID='1']/experience").getValue();

The following XSL will produce the output you wanted in format 2:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format">
	<xsl:template match="/">
		<xsl:element name="data">
			<xsl:for-each select="http://record">
			<xsl:element name="record">
			<xsl:for-each select="@*">
			<xsl:choose>
				<xsl:when test="name()='jsxid'"><xsl:element name="ID"><xsl:value-of select="."/></xsl:element></xsl:when>
				<xsl:when test="name()='jsxtext'"></xsl:when>
				<xsl:otherwise><xsl:element name="{name()}"><xsl:value-of select="."/></xsl:element></xsl:otherwise>
			</xsl:choose>
			</xsl:for-each>
			</xsl:element>
			</xsl:for-each>
		</xsl:element>
	</xsl:template>
</xsl:stylesheet>



You can use this XPath for format1:

//record[@jsxid='1']/@experience


3.Is there a way to select items in a Select by pressing keys? For example I have a alphabetized list of States. I want to be able to press 'A' 4 times to move from Alabama, to Alaska, to Arizona, to Arkansas. Then I want to be able to press tab and move on to a zip code field. This should leave Arkansas selected.

This is the normal behavior for a simple html select box and I want to stick to what people are familiar with.

function handleKeyPress(objSelect,objEvent) {
  //resolve the key the pressed;only listen for numbers and letters
  var intKey = objEvent.keyCode();
  var strKey = String.fromCharCode(intKey);
  if(strKey.search(/[a-z0-9]/i) == -1) return true;
  var objKey = new RegExp(strKey,"i");

  //get list of options for the select
  var objXML = objSelect.getXML();
  var objTextNodes = objSelect.getXML().selectNodes("http://record[@jsxtext]");

  //query the select box to see if the same key was pressed before; if so begin searching at he correct index
  var objState = objSelect.custom_index || {};
  objState[strKey] = (objState[strKey] != null) ? objState[strKey] : 0;
  var intIndex = (objState[strKey] < objTextNodes.getLength()) ? objState[strKey] : 0;
  jsx3.log("index: " + objState[strKey]);


  objState[strKey] = 0;
  return true;
};


function handleKeyPress(objSelect,objEvent) {
  //resolve the key the pressed;only listen for numbers and letters
  var intKey = objEvent.keyCode();
  var strKey = String.fromCharCode(intKey);
  if(strKey.search(/[a-z0-9]/i) == -1) return true;
  var objKey = new RegExp(strKey,"i");

  //get list of options for the select
  var objXML = objSelect.getXML();
  var objTextNodes = objSelect.getXML().selectNodes("http://record[@jsxtext]");

  //query the select box to see if the same key was pressed before; if so begin searching at he correct index
  var objState = objSelect.custom_index || {};
  objState[strKey] = (objState[strKey] != null) ? objState[strKey] : 0;
  var intIndex = (objState[strKey] < objTextNodes.getLength()) ? objState[strKey] : 0;
  jsx3.log("index: " + objState[strKey]);

  //loop to find the next item in the list that begins with the given key
  for(var i=intIndex;i<objTextNodes.getLength();i++) {
    if(objTextNodes.getItem(i).getAttribute("jsxtext").search(objKey) == 0) {
      objSelect.custom_index = {};
      objSelect.custom_index[strKey] = i+1;
      objSelect.setValue(objTextNodes.getItem(i).getAttribute("jsxid"));
      return false;
    }
  }

  //loop from 0 to current index to find the first item in the list that begins with the given key.(wrap around)
  //following was added by dlehman
  for(var i=0;i<intIndex;i++) {
    if(objTextNodes.getItem(i).getAttribute("jsxtext").search(objKey) == 0) {
      objSelect.custom_index = {};
      objSelect.custom_index[strKey] = i+1;
      objSelect.setValue(objTextNodes.getItem(i).getAttribute("jsxid"));
      return false;
    }
  }
  
  objState[strKey] = 0;
  return true;
};