function emailfield(O,V,W){
	if(O.value==V){
		O.value=W;
	}
}

function checkFields(){
	if (document.contactus.firstname.value == "Enter your First Name here" || (document.contactus.firstname.value == "")){
		alert("Your First Name is required");
		return false;
	}	

	if (document.contactus.lastname.value == "Enter your Last Name here" || (document.contactus.lastname.value == "")){
		alert("Your Last Name is required");
		return false;
	}		

	if (document.contactus.email.value == "Enter your Email here" || (document.contactus.email.value.indexOf("@",0) == -1||document.contactus.email.value.indexOf(".",0) == -1)) { 
		alert("Please enter a valid E-mail address");
		return false;
	}
	
	if (document.contactus.comments.value == "Please enter your comments." || (document.contactus.comments.value == "")){
		alert("Your comments are required");
		return false;
	}		
}