Please look at http://www.fusioncharts.com/free/ and download their free version of charting. There you'll have the right PHP class to use and the JS.
Now take their simple and basic exapme (I did some simple modification):
<?php
# Include FusionCharts PHP Class
require_once('c:/webserver/ewp/Charts/Includes/FusionCharts_Gen.php');
# Create Multiseries Column3D chart object using FusionCharts PHP Class
$FC = new FusionCharts("StackedBar2D","350","120");
# Set the right range
$fullscale = 10;
$Score = 6.4;
$LRange = 3;
$RRange = 7.8;
$RiskRange = $LRange - 0;
$LeftNormalSide = $Score - $RiskRange ;
$MarkedPosition = 0.041;
$RightNormalSide = $RRange - ($Score - $MarkedPosition);
$GoodRange = $fullscale - $RRange- .1;
# Set the relative path of the swf file
$FC->setSWFPath("./Charts/");
# Store chart attributes in a variable
$strParam="caption=;subcaption=;xAxisName=;yAxisName=Scale;numberPrefix=;decimalPrecision=0;showValues=0";
# Set chart attributes
$FC->setChartParams($strParam);
# Add category names
$FC->addCategory("Category 1");
# Create a new dataset
$FC->addDataset("Risk","color=#FF0000");
# Add chart values for the above dataset
$FC->addChartData($RiskRange);
# Create second dataset
$FC->addDataset("Normal", "color=F6BD0F");
# Add chart values for the second dataset
$FC->addChartData($LeftNormalSide);
# Create a new dataset
$FC->addDataset("You are here", "color=black");
# Add chart values for the above dataset
$FC->addChartData($MarkedPosition);
# Create second dataset
$FC->addDataset("", "color=F6BD0F");
# Add chart values for the second dataset
$FC->addChartData($RightNormalSide);
# Create a new dataset
$FC->addDataset("Good", "color=#00CC00");
# Add chart values for the above dataset
$FC->addChartData($GoodRange);
?>
<script language='javascript' src='./JSClass/FusionCharts.js'></script>
<?
# Render Chart
$FC->renderChart();
?>
Try to run it now outside of dolphin (I guess you know how to do it) and you'll see a nice horizontal stackbar.
Now try to embed it inside Dolphin new block..and see what is my problem.
Best and thanks for your help
Yossi