Calculate the Total

//This should be applied on second value name field on change

function fun()

{

var f1=Xrm.Page.getAttribute("firstvalue name").getValue();

 

var f2=Xrm.Page.getAttribute("secondvalue name").getValue();

 

if(f1!=null && f2!=null)

{

var res=f1*f2;

 

Xrm.Page.getAttribute("result field name").setValue(res);

 

}

}