Feel free to rewrite script in an iframe for support. See this script as an idea.

NOTE! Customizations directly to the DOM are not supported by the product group.

Notice new link in right corner of entity! Click the E-mail opportunity link to open outlook with direct URL pasted to e-mail

function createSendLink()

{

var strUrl = "";

if (IsOnline())

{

var title = "Please followup on Opportunity [" + crmForm.name.DataValue + "]";

var id = crmForm.ObjectId;

id = id.replace("{",""); id = id.replace("}","");               

query = '' + this.location;

query = query.substring(0, query.indexOf('?'));

strUrl = query + "/sfa/opps/edit.aspx?id=";                     

}

if (IsOutlookLaptopClient())

strUrl = crmRcUtil.ServerUrl.replace("MSCRMServices", "") + "sfa/opps/edit.aspx?id=";

strUrl = escape(strUrl);        

var a = document.createElement("a")

var aText = document.createTextNode("E-mail opportunity link...")

a.href = "mailto:&subject="+title+"&body=" + strUrl + id;       

a.name = "EmailLink";

a.appendChild(aText)

if (document.getElementById('_MBcrmFormSubmitCrmForm1truetruefalse')!= null)

{

var cur = document.getElementById('_MBcrmFormSubmitCrmForm1truetruefalse')            

document.getElementById('mnuTitle').insertBefore(a, cur.nextSibling);

}                    

}