var eglvchathandle = null;
function openHelp() { 
try{
if( eglvchathandle != null && eglvchathandle.closed == false ){
eglvchathandle.focus();
return;
}
}
catch(err){}
var refererName = "";
refererName = encodeURIComponent(refererName);
var refererurl = encodeURIComponent(document.location.href);
var hashIndex = refererurl.lastIndexOf('#');
if(hashIndex != -1){
refererurl = refererurl.substring(0,hashIndex);
}
var w = 630, h = 440;
var t = 0, l = 0;
if (window.screen) {
if (window.screen.availWidth == 800)
w = window.screen.availWidth * 41 / 100;
else {
w = window.screen.availWidth * 31 / 100;
}
h = window.screen.availHeight * 95 / 100;
l = (window.screen.availWidth - w)*98/100;
}
var params =  "width=" + w + ",height=" + h + ",left=" + l + ",top=" + t +
",resizable=no,scrollbars=yes,toolbar=no";
eglvchathandle = window.open(
'http://ems00658.egain.net/system/LiveCustomerServlet.egain?eglvcmd=CustEntry&entryPointName=Herceptin&eglvepid=1001&departmentid=999&eglvpartid=1&referer='+refererurl+'&eglvrefname='+refererName,'',params)
}