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 contactval()
{
//alert("hi");
////////////////
var name=document.form1.name.value;

name= name.replace(/\s+$/g,'');
if(name.length==0)
{
alert("Please enter your name.");
document.form1.name.focus();
return false;
}
///////////
var emailID=document.form1.email;
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID.")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
///////////
var pno=document.form1.pno.value;
pno= pno.replace(/\s+$/g,'');
if(pno.length==0)
{
   alert ( "Please enter phone no." );
		document.form1.pno.focus();
		document.form1.pno.value="";
        return false;
}


var country=document.form1.country.value;
country= country.replace(/\s+$/g,'');
if(country.length==0)
{
   alert ( "Please enter country name." );
		document.form1.country.focus();
		document.form1.country.value="";
        return false;
}





var message=document.form1.message.value;
message= message.replace(/\s+$/g,'');
if(message.length==0)
{
   alert ( "Please enter message." );
		document.form1.message.focus();
		document.form1.message.value="";
        return false;
}
}