function validate(){
	var filter=/^[a-zA-Z][\w\_\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/;
	var tomatch= /http:\/\/[A-Za-z0-9\.-]{3,}\.[A-Za-z]{3}/
	
	var name = document.getElementById("name");
	var phone = document.getElementById("phone");
	var email = document.getElementById("email");
	var URL = document.getElementById("URL");
	
	if(name.value=='Name' || name.value==''){
		alert("Please enter Name");
		name.focus();
		return false;
	}
	
	if(phone.value=='Phone' || phone.value==''){
		alert("Please enter Phone");
		phone.focus();
		return false;
	}
	if(isNaN(phone.value)){
		alert("Phone Number Must Be Numeric");
		phone.focus();
		return false;
	}
	
	
	if(email.value == 'Email' || email.value == ''){
		alert("Please enter email address !");
	 	email.focus();
	 	return false;
	}
	if(!filter.test(email.value))
    {
     alert("Please enter valid email address !");
	 email.focus();
	 return false; 
    }
	
	
	if(URL.value == "") {
	alert("Please Enter Your Site Url!");
	URL.focus();
	return false; 
	}
		
	if(white_space(URL.value) == ''){
		alert("Spaces are not allowed.");
		URL.focus();
		URL.select();
		return false;
	}
	return true;	
}