Cursor On TextBox And Focus On Button?

if I click on the SearchSearch Textbox, I want the highlight to be on the Search Button and not on save without using AcceptButton or any TabIndexing so if whenever i press ENTER and the 'I' cursor is on the SearchSearch Textbox, the search button will be triggered.

Javascript:
function getFocus(textboxName,e) {
document.getElementByIdSearchSearch(textboxName).focus();
}

[Code]....

before i made the Search button on focus whenrver i click on the Search textbox. so what happens is everytime i click on the textbox it instantly focuses on the Search button making me unable to type anything. I tried also making a Panel for the Search textbox and button having a DefaultButton but it doesnt highlights the Search Button