function clearall() {
	document.form1.name.value=="";
	document.form1.email.value=="";
	document.form1.phone.value=="";
}
function checknull() {	
	if(document.form1.name.value=="") {
		alert("Please Give Name");
		document.form1.name.focus();
		return false;
	}
	
	if(document.form1.phone.value=="") {
		alert("Please Give Phone Number");
		document.form1.phone.focus();
		return false;
	}
	if(isNaN(document.form1.phone.value)) {
		alert("Please Give Valid Phone Number");
		document.form1.phone.focus();
		return false;
	}
	
	
	if(document.form1.email.value=="") {
		alert("Please Give E-mail");
		document.form1.email.focus();
		return false;
	}
	var username=document.form1.email.value;
	if( (username.lastIndexOf(".")>username.lastIndexOf("@") ) && (username.lastIndexOf("@")==username.indexOf("@")) && (username.length>(username.lastIndexOf(".")+2)) && (username.length<(username.lastIndexOf(".")+6)) && (username.indexOf("@")>1) && ((username.indexOf("@")+2)<(username.lastIndexOf(".")))) {
 
	}
	else {
        alert("Give valid E-mail ID ");
		document.form1.email.focus();
		return false;
	}	  
	
	return true;	
}