function selectUsers () { // find id of user selection object var listid = 0; for ( i = 0; i < document.assistanteditform.elements.length; i++ ) { if ( document.assistanteditform.elements[i].name == "users[]" ) listid = i; } url = "usersel.php?form=assistanteditform&listid=" + listid + "&users="; // add currently selected users for ( i = 0, j = 0; i < document.assistanteditform.elements[listid].length; i++ ) { if ( document.assistanteditform.elements[listid].options[i].selected ) { if ( j != 0 ) url += ","; j++; url += document.assistanteditform.elements[listid].options[i].value; } } //alert ( "URL: " + url ); // open window window.open ( url, "UserSelection", "width=500,height=500,resizable=yes,scrollbars=yes" ); }