var http_request = false;
   function makePOSTRequest(url, parameters) {
      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 = alertContents;
      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 alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;  
            document.getElementById('pdtDiv').innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
	  }  else {
		 document.getElementById('pdtDiv').innerHTML = '<div class="lgnhed" align="center" style="color:#969696;background-color:#cf8f92;padding-bottom:10px"><img src="../images/loading.gif" />&nbsp;&nbsp;&nbsp;&nbsp;<strong>Loading...</strong></div>';  
	  }
   }
   
   function searchPdt() {  
      var poststr = "numOfPagesAjax=" + encodeURI( document.getElementById("numOfPagesAjax").value ) +
	  				"&selectedPaperAjax=" + encodeURI( document.getElementById("selectedPaperAjax").value ) +
					"&selectedQuantityAjax=" + encodeURI( document.getElementById("selectedQuantityAjax").value ) +
					"&numOfSidesAjax=" + encodeURI( document.getElementById("numOfSidesAjax").value )  ;
      
	  makePOSTRequest('pdtAjax.php', poststr); 
   }
   
    
   function formatAsMoney(mnt) {
		mnt -= 0;
		mnt = (Math.round(mnt*100))/100;
		return (mnt == Math.floor(mnt)) ? mnt + '.00' 
				  : ( (mnt*10 == Math.floor(mnt*10)) ? 
						   mnt + '0' : mnt);
	}