Web reporting - calling two seperate javascript commands

I have a javascript funtion which hides a web item and then calls up the value help / filter popup.(see below)

If I include an alert command in between both the hide and popup commands work. If I exclude the alert command only the second popup command works.

How can I perform the hide and popup commands without the alert comand.

function TWOCOMS3()

{

SAPBWOpenURL(SAP_BW_URL_Get() +'&ITEM=FILTER_1&HIDDEN=X');

alert("message 1");

SAPBWOpenURL(SAP_BW_URL_Get() +'&CMD=PROCESS_HELP_WINDOW&DATA_PROVIDER=DATAPROVIDER_1&HELP_SERVICE=DP_VIEW_FILTER&IOBJNM=Z_VENDOR')

}

Thanks

-Hans