function checkContactUsForm()
{
	if(document.contactUsForm.firstname.value == "")
	{
		alert("First Name is required... !!!");
		document.contactUsForm.firstname.focus();
		return false;
	}
	if(document.contactUsForm.lastname.value == "")
	{
		alert("Last Name is required... !!!");
		document.contactUsForm.lastname.focus();
		return false;
	}
	if(document.contactUsForm.email.value == "")
	{
		alert("Email is required... !!!");
		document.contactUsForm.email.focus();
		return false;
	}
	if(!isEmail(document.contactUsForm.email.value))
	{
		alert("Pl. Give Valid Email Id");
		document.contactUsForm.email.focus();
		return false;
	}
	if(document.contactUsForm.comment.value == "")
	{
		alert("Comment is required... !!!");
		document.contactUsForm.comment.focus();
		return false;
	}
	
	return true;
}

function isEmail(valEmail)
{
	var reg = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if(reg.test(valEmail))
		return true;	
	else
		return false;
}

function add_rm_txt(o,v,s) {

		if(s==1){	

			if(o.value==v)

				o.value="";

		} else {

			if(o.value=="")

				o.value=v;	

		}

	}