MVC 5 action link text change to image

Question

hi all, 

This is action links code in mvc 5. I need to add images instead of text. how to do.

 

@Html.Raw("<a onclick='MergeCustomer(" + item.customer_id + ", " + TempData["NewCustomerID"] + ")'>Merge</a>") 

<span style=" color:black">|</span>

@Ajax.ActionLink("Compare", "_CompareCustomerDetails", new { ExistingCustomerId = item.customer_id, NewCustomerId = TempData["NewCustomerID"]}, new AjaxOptions()

{

HttpMethod = "Get",

UpdateTargetId = "divCustomerCompare",

InsertionMode = InsertionMode.Replace

//LoadingElementId = "Loading"

}, new { id = "lnkCompare"})

 

thanks