var http_request = false;
   function makePOSTRequest(url, parameters,dzone) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      
      http_request.onreadystatechange = function() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            result = http_request.responseText;
            document.getElementById(dzone).innerHTML = result; 
			document.body.style.cursor = 'default';
//alert("dave");			
         } else {
            alert('There was a problem with the request.');
         }
		 document.body.style.cursor = 'default';
      }
	  };
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }
     
   function ajax(qry,action,divid) {
      if (qry != "")
	  {
		document.body.style.cursor = 'wait';  
        var poststr = "";		
		for (i=0; i<document.forms[qry].elements.length; i++)
		{
		   if (document.forms[qry].elements[i].type == 'radio' || document.forms[qry].elements[i].type == 'checkbox')
		   {
		      if (document.forms[qry].elements[i].checked)
			  {
			     poststr = poststr + document.forms[qry].elements[i].name + "=" + document.forms[qry].elements[i].value + "&";
			  }
		   }
		   else
		   {
		      if (document.forms[qry].elements[i].type == 'select-one')
			  {
			     selIndex = document.forms[qry].elements[i].selectedIndex;
				 poststr = poststr + document.forms[qry].elements[i].name + "=" + document.forms[qry].elements[i].options[selIndex].value + "&";
			  }
			  else
			  {
			      poststr = poststr + document.forms[qry].elements[i].name + "=" + document.forms[qry].elements[i].value + "&";
			  }
		   }
		}
		poststr = poststr + "xx_submit=1";
		//alert(action + ',' + divid); return;
        makePOSTRequest(action,poststr,divid); 
	  } 
   }

function noLetters(e)
{
var keynum;
var keychar;
var numcheck = new RegExp(/[\d\/]/);

if(window.event) // IE
{
keynum = e.keyCode;
}
else if(e.which) // Netscape/Firefox/Opera
{
keynum = e.which;
}
keychar = String.fromCharCode(keynum);
//numcheck = /[\d\/]/;
if (numcheck.test(keychar))
   return true;
else
{
	if ((keynum == 8) || (keynum == 9 ) || (keynum == 13)) //backspace, tab and enter
	   return true;
	else
	   return false;
}
}