// highlight_form.js
// this script highlights form elements when entered
// the highlight color can be specified as highlightcolor

var highlightcolor="#A0B8C8"



var ns6=document.getElementById&&!document.all

var previous=''

var eventobj



//Regular expression to highlight only form elements

var intended=/INPUT|TEXTAREA|SELECT|OPTION/



//Function to check whether element clicked is form element

function checkel(which){

if (which.style&&intended.test(which.tagName)){

if (ns6&&eventobj.nodeType==3)

eventobj=eventobj.parentNode.parentNode

return true

}

else

return false

}



//Function to highlight form element

function highlight(e){

eventobj=ns6? e.target : event.srcElement

if (previous!=''){

if (checkel(previous))

previous.style.backgroundColor=''

previous=eventobj

if (checkel(eventobj))

eventobj.style.backgroundColor=highlightcolor

}

else{

if (checkel(eventobj))

eventobj.style.backgroundColor=highlightcolor

previous=eventobj

}

}