// JavaScript Document
formReturnValue = false;

function addBackLink()
{
	document.writeln("<a id='backlink' href='javascript:history.go(-1);'>&lt; Back</a>");
}

function validateContactForm(nameId, emailId)
{
	var n = document.getElementById(nameId);
	var e = document.getElementById(emailId);

	if(n.value == '')
	{
		window.alert('Please enter your name.');
		n.select();
		return false;
	}
	else if(e.value == '')
	{
		window.alert('Please enter a valid email address.');
		e.select();
		return false;
	}
	else
	{
		return true;
	}
}

//Swap image of given img element
function SwapImage(imgId, imgUrl){
	var img = document.getElementById(imgId);
	img.src = imgUrl;
}

function TextCeiling(textboxId, maxLength) {
    var textbox = document.getElementById(textboxId);
    var text = textbox.value;
    if (text.length > maxLength) {
        textbox.value = text.substring(0, maxLength);
    }
}