// JavaScript Document
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){
		    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 validate_form()
	{
	var emailID=document.form1.Address
	   	if ( document.form1.Name.value == "" || document.form1.Name.value == null)
        {
        alert ( "Please Enter Name." );
		document.form1.Name.focus()
        return false;
        }
		 else if ((emailID.value == null)||(emailID.value == ""))
	{
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	else if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
else if ( document.form1.Telephone.value == "" || document.form1.Telephone.value==null || isNaN(document.form1.Telephone.value))  {
        alert ( "Please Enter the Phone Number." );
		document.form1.Telephone.value ="";
		document.form1.Telephone.focus()
        return false;
    }
	 if ( document.form1.Comments.value == "" || document.form1.Comments.value == null)
    {
        alert ( "Please Enter Comments:" );
		document.form1.Comments.focus()
        return (false);
    }
  
	return true
}