In one case, where a record has to be saved to be enrolled in advanced workflow, we want to rename the Save button to "Begin". Hiding the Save button and adding a custom begin button that performs the save functionality would also be fine. I've tried to do both and failed. I know the code to hide buttons, it's just the renaming I'm struggling with. I think my best guess is:
var beginbtn = document.getElementsById("master_btnApply1").childNodes;
beginbtn.innerHTML = "Begin";
This hides the Save and Close and Copy buttons, but doesn't rename the Save button.
I can see the element I want to change: