function checkValue (input) {
	if(input.value==input.defaultValue)
		input.value="";
	else if(input.value=="")
		input.value=input.defaultValue;
}

function checkForm(form, className)
{
	if(!className)
		className = "compulsory";
	var i;
	for (i=0; i < form.length; i++)
	{
		if (form[i].className.indexOf(className) != -1)
		{
			var type = form[i].type.toLowerCase();
			if (type == "textarea" || type == "text" || type == "password"){
				if (form[i].value == form[i].defaultValue || form[i].value == "")
				{
					alert('Name, Email and Message fields are compulsory.');
					return false;
				}
			}
			else {
				if (type == "checkbox" && !form[i].checked)
				{
					alert('Name, Email and Message fields are compulsory.');
					return false;					
				}
			}
		}
	}
	for (i=0; i < form.length; i++)
	{
		var type = form[i].type.toLowerCase();
		if (type == "textarea" || type == "text" || type == "password")
		{
			if (form[i].value == form[i].defaultValue)
			{
				form[i].value = " ";
			}
		}
	}
	return true;
}