//Highlight form element- © Dynamic Drive (www.dynamicdrive.com)
//For full source code, 100's more DHTML scripts, and TOS,
//visit http://www.dynamicdrive.com

var highlightcolor="#FFCC00"

var ns6=document.getElementById&&!document.all
var previous=''
var eventobj

//Regular expression to highlight only form elements
var intended=/INPUT|TEXTAREA|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
			}
	}