My companys ranks high in SERPS for some of the keywords related to my products. Now my company is launcing a new service and wants to display a modal window in the homepage which will occupy the full page for a few secs and then dissappear.
Is this safe and will it have any impact on my prior SEO efforts
the script my techies are using
var agreewin=dhtmlmodal.open("agreebox", "iframe", "Splash-quickstart.html", "", "width=860px,height=447px,center=1,resize=0,scrolling=0", "recal")
Let me know your thoughts