function contact_chk()
{
	if(document.contact_form.name.value=="Type your name here"){
	alert ("Please fill your name first !");
	document.contact_form.name.focus();
	return false;}

	if(document.contact_form.email.value=="Type your email here"){
	alert ("Please fill your Email ID first !");
	document.contact_form.email.focus();
	return false;}
	
	if((document.contact_form.email.value.indexOf('@')>0)== false){
		alert("Please enter a valid Email ID !");
		document.contact_form.email.focus();
		return false;}
	if((document.contact_form.email.value.indexOf('.')>0)== false){
		alert("Please enter a valid Email ID !");
		document.contact_form.email.focus();
		return false;}
	
	
	if(document.contact_form.contactno.value=="Type your contact no here"){
	alert ("Please fill your contact no first !");
	document.contact_form.contactno.focus();
	return false;}
	
		if (document.contact_form.contactno.value!="")
	{
	if(isNaN(document.contact_form.contactno.value)!= false){
	alert ("Please enter a valid phone number !");
	document.contact_form.contactno.focus();
	return false;}
	}
	
	if(document.contact_form.subject.value=="Type your subject here"){
	alert ("Please fill your subject first !");
	document.contact_form.subject.focus();
	return false;}
	
	if(document.contact_form.friendname.value=="Type your friend name here"){
	alert ("Please fill your friend name first !");
	document.contact_form.friendname.focus();
	return false;}
	
	if(document.contact_form.friendemail.value=="Type your friend email here"){
	alert ("Please fill your  friend email  first !");
	document.contact_form.friendemail.focus();
	return false;}
	
	
	if((document.contact_form.friendemail.value.indexOf('@')>0)== false){
		alert("Please enter a valid Email ID !");
		document.contact_form.friendemail.focus();
		return false;}
	if((document.contact_form.friendemail.value.indexOf('.')>0)== false){
		alert("Please enter a valid Email ID !");
		document.contact_form.friendemail.focus();
		return false;}	

	if(document.contact_form.message.value=="Type your message here"){
	alert ("Please fill your message first !");
	document.contact_form.message.focus();
	return false;}	
	
	
return true;
}