Change string font size in webresource Javascript CRM 2011
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I'm trying to do the next but I don't know if is possible develop that:
 
I have two strings like; 

var str1 = "Hello"; var str2 = "world";
 
And I change the description of an e-mail like this: 
 
Name.SetValue(str1.concat(str2));
 
I need str2 be smaller of font size than str1;
 
I have tried with style.fontsize, str2.fontSize(7) .. and are not working..
 
any one can help?
