var ns4 = (document.layers)? 1 : 0 ;
var ie = (document.all)? 1 : 0 ;
var usr = navigator.userAgent
var objns6 = (usr.indexOf('Netscape6')!=-1)? 1 : 0 ;
var ns = (document.getElementById)? 1 : 0 ;
var isMac = (navigator.userAgent.indexOf('Mac')!=-1) ;
var brsr = (navigator.appName.indexOf("Netscape")!=-1) ;

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function getParameter(str, name) {
  var res = "";
  if (str.indexOf("?")!=-1) {
    str = str.substring(str.indexOf("?")+1, str.length);
    if (str.indexOf(name)!=-1) {
      if (str.indexOf("&"+name, str.indexOf(name)+name.length)!=-1)
        res = str.substring(str.indexOf("&"+name)+name.length+1, str.indexOf("&"+name))
   	  else
        res = str.substring(str.indexOf(name)+name.length+1, str.length);
      if (res.indexOf("&")!=-1)
        res = res.substring(0,res.indexOf("&"));
   	}
  }
  return res;
}

function showImageBig(img, width, height) {
  width = (width>750)?750:width;
  height = (height>500)?500:height;
  width+=130;
  height+=180;
  width = (width<350)?350:width;
  height = (height<200)?200:height;
  win = window.open('big_image1.htm?img='+img,'_blank','width='+width+',height='
	+height+',left=17,top=17,statusbar=no,toolbar=no,scrollbars= never,navbar=no');
  win.focus();
}