function consultForm ()
{
  if(document.getElementById("name").value == '') {
  		alert("Please enter name");
		document.getElementById("name").focus();
		return false;
  }
  if(document.getElementById("email").value == '') {
  		alert("Please enter email ID");
		document.getElementById("email").focus();
		return false;
  }
  if(document.getElementById("email").value != '') {
  	  var email_addr = document.getElementById("email").value;
	  if(echeck(email_addr)==false){
	  		alert("Please enter valid email ID");
			document.getElementById("email").focus();
			return false;
	  }
  }
  if(document.getElementById("phone").value == '') {
  		alert("Please enter phone number");
		document.getElementById("phone").focus();
		return false;
  }
  if(document.getElementById("phone").value == 'e.g - 555-555-5555') {
  		alert("Please enter phone number");
		document.getElementById("phone").focus();
		return false;
  }
  if(document.getElementById("comment").value == '') {
  		alert("Please enter comment");
		document.getElementById("comment").focus();
		return false;
  }
  
  document.consult.submit() ;
}

function echeck(email_addr)
 {
	 	email_addr = trim(email_addr, '');
		var at="@";
		var dot=".";
		var lat=email_addr.indexOf(at);
		var lstr=email_addr.length;
		var ldot=email_addr.indexOf(dot);
		if ((email_addr.indexOf(at)==-1) || (email_addr.indexOf(at)==-1 || email_addr.indexOf(at)==0 || email_addr.indexOf(at)==lstr) || (email_addr.indexOf(dot)==-1 || email_addr.indexOf(dot)==0 || email_addr.indexOf(dot)==lstr) || (email_addr.indexOf(at,(lat+1))!=-1) || (email_addr.substring(lat-1,lat)==dot || email_addr.substring(lat+1,lat+2)==dot) || (email_addr.indexOf(dot,(lat+2))==-1) || (email_addr.indexOf(" ")!=-1)){
			return false;
		}
		return true;

}

function trim(str, chars) {
	return ltrim(rtrim(str, chars), chars);
}
 
function ltrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}
 
function rtrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}