// JavaScript Document
function valid()
{
	if(document.request.name.value=="")
	{
		alert("Please Enter your Name");
		document.request.name.focus();
		return false;
	}
	
	if(document.request.email.value==""){
			alert("Please Enter Valid Email Address");
			document.request.email.focus();
			return false;		
		}
	if(document.request.email.value!="")
		if(!isEmail(document.request.email.value)){
			alert("Please Enter Valid Email Address");
			document.request.email.focus();
			return false;		
		}
  if(document.request.ad.value==0)
  {
    alert ("Please Select option .");
    document.request.ad.focus();
     return false;
  }
	
}
function isEmail(str) {
        if (/^[a-zA-Z0-9]+([\.-]?\w+)*@[a-zA-Z0-9]+([\.-]?\w+)*(\.[a-zA-Z]{2,3})+$/i.test(str))

        {
              return true;
        }
        else
        {
                return false;
        }
		}