function getHTTPObject() {
	var xmlhttpLocal;

	if (window.XMLHttpRequest) {
	     xmlhttpLocal = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
	     xmlhttpLocal = new ActiveXObject("Microsoft.XMLHTTP");
	}	 

	return xmlhttpLocal;
}

function formatNumber(nStr)
{
	var x;
	var x1;
	var x2;
	
	nStr += '';
	nStr = nStr.replace(".", ",");
	x = nStr.split(',');
	x1 = x[0];
	x2 = x.length > 1 ? ',' + x[1] : '';
	var rgx = /(\d+)(\d{3})/;
	while (rgx.test(x1)) {
		x1 = x1.replace(rgx, '$1' + '.' + '$2');
	}
	return x1 + x2;
}

function getParam(varname)
{
  // First, we load the URL into a variable
  var url = window.location.href;
  // Next, split the url by the ?
  var qparts = url.split("?");
  // Check that there is a querystring, return "" if not
  if (qparts.length == 0)  { return "";  }
  // Then find the querystring, everything after the ?
  var query = qparts[1];
  // Split the query string into variables (separates by &s)
  var vars = query.split("&");
  // Initialize the value with "" as default
  var value = "";
  // Iterate through vars, checking each one for varname
  for (i=0;i<vars.length;i++)
  {
    // Split the variable by =, which splits name and value
    var parts = vars[i].split("=");    
    // Check if the correct variable
    if (parts[0] == varname)
    {
      // Load value into variable
      value = parts[1];
      // End the loop
      break;
    }
  }
  
  // Convert escape code
  value = unescape(value);
  // Convert "+"s to " "s
  value = value.replace("+"," ");
  
  // Return the value
  return value;
}

function roundNumber(num, dec) {
	var result = Math.round(num*Math.pow(10,dec))/Math.pow(10,dec);
	return result;
}

//this function is needed to work around 
// a bug in IE related to element attributes
function hasClass(obj) {
   var result = false;
   if (obj.getAttributeNode("class") != null) {
       result = obj.getAttributeNode("class").value;
   }
   return result;
}   

function stripe(id) {

  // the flag we'll use to keep track of 
  // whether the current row is odd or even
  var even = false;

  // if arguments are provided to specify the colours
  // of the even & odd rows, then use the them;
  // otherwise use the following defaults:
  var evenColor = arguments[1] ? arguments[1] : "#fff";
  var oddColor = arguments[2] ? arguments[2] : "#eee";

  // obtain a reference to the desired table
  // if no such table exists, abort
  var table = document.getElementById(id);
  if (! table) { return; }
  
  // by definition, tables can have more than one tbody
  // element, so we'll have to get the list of child
  // &lt;tbody&gt;s 
  var tbodies = table.getElementsByTagName("tbody");

  // and iterate through them...
  for (var h = 0; h < tbodies.length; h++) {
  
   // find all the &lt;tr&gt; elements... 
    var trs = tbodies[h].getElementsByTagName("tr");
    
    // ... and iterate through them
    for (var i = 0; i < trs.length; i++) {

      // avoid rows that have a class attribute
      // or backgroundColor style
      if (! hasClass(trs[i]) &&
          ! trs[i].style.backgroundColor) {
		  
        // get all the cells in this row...
        var tds = trs[i].getElementsByTagName("td");
      
        // and iterate through them...
        for (var j = 0; j < tds.length; j++) {
      
          var mytd = tds[j];

          // avoid cells that have a class attribute
          // or backgroundColor style
          if (! hasClass(mytd) &&
              ! mytd.style.backgroundColor) {
      
            mytd.style.backgroundColor =
              even ? evenColor : oddColor;
          
          }
        }
      }
      // flip from odd to even, or vice-versa
      even =  ! even;
    }
  }
}

/*
NIFTY
 Automatic, anti-aliased rounded corners.
 
 By Steven Wittens
 Based on http://pro.html.it/esempio/nifty/
 
 Thanks to Jacob from Oddlabs.com for fixing two nasty bugs.
*/

function NiftyCheck() {	
  if(!document.getElementById || !document.createElement) {
    return false;
  }
  var b = navigator.userAgent.toLowerCase();
  if (b.indexOf("msie 5") > 0 && b.indexOf("opera") == -1) {
    return false;
  }
  return true;
}

function Rounded(selector, bk, color, sizex, sizey) {
  var i;
  var v = getElementsBySelector(selector);
  var l = v.length;
  for (i = 0; i < l; i++) {
    AddTop(v[i], bk, color, sizex, sizey);
    AddBottom(v[i], bk, color, sizex, sizey);
  }
}

Math.sqr = function (x) {
  return x*x;
};

function Blend(a, b, alpha) {
  var ca = Array(
    parseInt('0x' + a.substring(1, 3)), 
    parseInt('0x' + a.substring(3, 5)), 
    parseInt('0x' + a.substring(5, 7))
  );
  var cb = Array(
    parseInt('0x' + b.substring(1, 3)), 
    parseInt('0x' + b.substring(3, 5)), 
    parseInt('0x' + b.substring(5, 7))
  );
  r = '0' + Math.round(ca[0] + (cb[0] - ca[0])*alpha).toString(16);
  g = '0' + Math.round(ca[1] + (cb[1] - ca[1])*alpha).toString(16);
  b = '0' + Math.round(ca[2] + (cb[2] - ca[2])*alpha).toString(16);
  return '#'
    + r.substring(r.length - 2)
    + g.substring(g.length - 2)
    + b.substring(b.length - 2);
}

function AddTop(el, bk, color, sizex, sizey) {
  var i, j;
  var d = document.createElement("div");
  d.style.backgroundColor = bk;
  d.className = "rounded";
  var lastarc = 0;
  for (i = 1; i <= sizey; i++) {
    var coverage, arc2, arc3;
    // Find intersection of arc with bottom of pixel row
    arc = Math.sqrt(1.0 - Math.sqr(1.0 - i / sizey)) * sizex;
    // Calculate how many pixels are bg, fg and blended.
    var n_bg = sizex - Math.ceil(arc);
    var n_fg = Math.floor(lastarc);
    var n_aa = sizex - n_bg - n_fg;
    // Create pixel row wrapper
    var x = document.createElement("div");
    var y = d;
    x.style.margin = "0px " + n_bg +"px";
    // Make a wrapper per anti-aliased pixel (at least one)
    for (j = 1; j <= n_aa; j++) {
      // Calculate coverage per pixel
      // (approximates circle by a line within the pixel)
      if (j == 1) {
        if (j == n_aa) {
          // Single pixel
          coverage = ((arc + lastarc) * .5) - n_fg;
        }
        else {
          // First in a run
          arc2 = Math.sqrt(1.0 - Math.sqr(1.0 - (n_bg + 1) / sizex)) * sizey;
          coverage = (arc2 - (sizey - i)) * (arc - n_fg - n_aa + 1) * .5;
        }
      }
      else if (j == n_aa) {
        // Last in a run
        arc2 = Math.sqrt(1.0 - Math.sqr((sizex - n_bg - j + 1) / sizex)) * sizey;
        coverage = 1.0 - (1.0 - (arc2 - (sizey - i))) * (1.0 - (lastarc - n_fg)) * .5;
      }
      else {
        // Middle of a run
        arc3 = Math.sqrt(1.0 - Math.sqr((sizex - n_bg - j) / sizex)) * sizey;
        arc2 = Math.sqrt(1.0 - Math.sqr((sizex - n_bg - j + 1) / sizex)) * sizey;
        coverage = ((arc2 + arc3) * .5) - (sizey - i);
      }
      
      x.style.backgroundColor = Blend(bk, color, coverage);
      y.appendChild(x);
      y = x;
      var x = document.createElement("div");
      x.style.margin = "0px 1px";
    }
    x.style.backgroundColor = color;
    y.appendChild(x);
    lastarc = arc;
  }
  el.insertBefore(d, el.firstChild);
}

function AddBottom(el, bk, color, sizex, sizey) {
  var i, j;
  var d = document.createElement("div");
  d.className = "rounded";
  d.style.backgroundColor = bk;
  var lastarc = 0;
  for (i = 1; i <= sizey; i++) {
    var coverage, arc2, arc3;
    // Find intersection of arc with bottom of pixel row
    arc = Math.sqrt(1.0 - Math.sqr(1.0 - i / sizey)) * sizex;
    // Calculate how many pixels are bg, fg and blended.
    var n_bg = sizex - Math.ceil(arc);
    var n_fg = Math.floor(lastarc);
    var n_aa = sizex - n_bg - n_fg;
    // Create pixel row wrapper
    var x = document.createElement("div");
    var y = d;
    x.style.margin = "0px " + n_bg + "px";
    // Make a wrapper per anti-aliased pixel (at least one)
    for (j = 1; j <= n_aa; j++) {
      // Calculate coverage per pixel
      // (approximates circle by a line within the pixel)
      if (j == 1) {
        if (j == n_aa) {
          // Single pixel
          coverage = ((arc + lastarc) * .5) - n_fg;
        }
        else {
          // First in a run
          arc2 = Math.sqrt(1.0 - Math.sqr(1.0 - (n_bg + 1) / sizex)) * sizey;
          coverage = (arc2 - (sizey - i)) * (arc - n_fg - n_aa + 1) * .5;
        }
      }
      else if (j == n_aa) {
        // Last in a run
        arc2 = Math.sqrt(1.0 - Math.sqr((sizex - n_bg - j + 1) / sizex)) * sizey;
        coverage = 1.0 - (1.0 - (arc2 - (sizey - i))) * (1.0 - (lastarc - n_fg)) * .5;
      }
      else {
        // Middle of a run
        arc3 = Math.sqrt(1.0 - Math.sqr((sizex - n_bg - j) / sizex)) * sizey;
        arc2 = Math.sqrt(1.0 - Math.sqr((sizex - n_bg - j + 1) / sizex)) * sizey;
        coverage = ((arc2 + arc3) * .5) - (sizey - i);
      }
      
      x.style.backgroundColor = Blend(bk, color, coverage);
      y.insertBefore(x, y.firstChild);
      y = x;
      var x = document.createElement("div");
      x.style.margin = "0px 1px";
    }
    x.style.backgroundColor = color;
    y.insertBefore(x, y.firstChild);
    lastarc = arc;
  }
  el.appendChild(d);
}

function getElementsBySelector(selector) {
  var i;
  var s = [];
  var selid = "";
  var selclass = "";
  var tag = selector;
  var objlist = [];
  if (selector.indexOf(" ") > 0) {  //descendant selector like "tag#id tag"
    s = selector.split(" ");
    var fs = s[0].split("#");
    if (fs.length == 1) {
      return objlist;
    }
    return document.getElementById(fs[1]).getElementsByTagName(s[1]);
  }
  if (selector.indexOf("#") > 0) { //id selector like "tag#id"
    s = selector.split("#");
    tag = s[0];
    selid = s[1];
  }
  if (selid != "") {
    objlist.push(document.getElementById(selid));
    return objlist;
  }
  if (selector.indexOf(".") > 0) {  //class selector like "tag.class"
    s = selector.split(".");
    tag = s[0];
    selclass = s[1];
  }
  var v = document.getElementsByTagName(tag);  // tag selector like "tag"
  if (selclass == "") {
    return v;
  }
  for (i = 0; i < v.length; i++) {
    if (v[i].className == selclass) {
      objlist.push(v[i]);
    }
  }
  return objlist;
}