function validations()
{
var title=document.callback.name.value;
if(title=="0" || title=="")
{   
alert("Please enter name");document.callback.name.focus();return false;  
}

var name=document.callback.company.value;
if(name=="0" || name=="")
{   
alert("Please enter company");document.callback.company.focus();return false;  
}
var phone=document.callback.country.value;
if(phone=="0" || phone=="")
{   
alert("Please enter country");document.callback.country.focus();return false;  
}

var phone=document.callback.mobile.value;
if(phone=="0" || phone=="")
{   
alert("Please enter mobile");document.callback.mobile.focus();return false;  
}

var email=document.callback.email.value;
if(email=="0" || email=="")
{
alert("Please enter Email address");
document.callback.email.focus();
return false;
}

if(valemail(email,"Please enter valid Email ID!") == false)
{
document.callback.email.select();
return false;
}
 if(document.callback.description.value=="")
 {
 alert("Please enter description");
 document.callback.description.focus();
 return false;
 }
 return true;
}
function valemail(field,alerttxt)
{
  with (field)
  {
   var atpos = field.indexOf("@")
   var dotpos = field.lastIndexOf(".")
   var lastpos = field.length - 1
    if (atpos < 2 || dotpos - atpos < 2 || lastpos-dotpos > 4 || lastpos-dotpos < 2 )
	{
	   alert(alerttxt)		
	   return false
	} 
  }
 }