function validate_contact()
{

	if(document.getElementById('cname').value.search(/\S/) == -1){
	alert('Enter your name');
	document.getElementById('cname').focus();
	return false;
	}
	else if(document.getElementById('address').value.search(/\S/) == -1){
	alert('Enter Address');
	document.getElementById('address').focus();
	return false;
	}
	//else if(!validateEmail(document.getElementById('address').value)){
//	alert('Enter proper Address!');
//	document.getElementById('address').focus();
//	return false;
//	}
	else if(document.getElementById('phoneno').value.search(/\S/) == -1){
	alert('Enter phone no');
	document.getElementById('phoneno').focus();
	return false;
	}
	else if(!isInteger(document.getElementById('phoneno').value)){
	alert('Phone should be numbers!');
	document.getElementById('phoneno').focus();
	return false;
	}
	else if(document.getElementById('email').value.search(/\S/) == -1){
	alert('Enter email address');
	document.getElementById('email').focus();
	return false;
	}
	else if(!validateEmail(document.getElementById('email').value)){
	alert('Enter proper email!');
	document.getElementById('email').focus();
	return false;
	}
	else{
	return true;
	}
}


// checks if the email is correct or not //
function validateEmail(elementValue){  
var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;  
 return emailPattern.test(elementValue);  
}  



function isInteger(s)
{
	var i;
	s = s.toString();
      for (i = 0; i < s.length; i++)
      {
         var c = s.charAt(i);
         if (isNaN(c)) 
	   {
			return false;
	   }
      }
      return true;
}