function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr-1){
		    alert("Invalid E-mail ID")
		    return false
		}	
		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}
	
function Validator(form)
{

	if (form.fname.value == "")
		{
		alert("Please Enter Name.");
		form.fname.focus();
		return false ;
		}
	
	if (form.email.value == "")
		{
			alert("Please Enter Email.");
			form.email.focus();
			return false ;
		}
	if (echeck(form.email.value)==false)
		{
		form.email.focus();
		return false;
		}
	
	if (form.phone.value == "")
		{
		alert("Please Enter Phone Number.");
		form.phone.focus();
		return false ;
		}
	if(isNaN(form.phone.value)) 
		{ 
		 alert("Only numbers are allowed in Phone Number."); 
		 form.phone.focus(); 
		 return false; 
    	}
		
	if (form.query.value == "")
		{
		alert("Please Enter Query.");
		form.query.focus();
		return false ;
		}
	
	
	return true;
}