C# Website Link Problem

I have a C# website with the links should below.  The links are LinkButtons.  I currently have it that when the click on the link it sets the url and I have some C# code in the event that says use javascript and redirect to the url the i just set all the parameters to in a new window.  The only way i can get these to show in IE is to hold control when i click on the link until the pdf is displayed.  is there a better way to display a pdf report by clicking a link instead of using C# javascript (which i included)?

Page.ClientScript.RegisterStartupScript(this.GetType(), "newPage", "<script>window.open('" + url + "');</script>");

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links.JPG