function disp_alert()
{

var myURL = window.location.href+"";
document.myform.message.value ="Hi there, I think that this may be interesting for you. Check it out!" +"\n" +"\n" + myURL;
}

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("Your E-mail ID is Invalid") 
return false 
} 

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

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

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

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

}

function echeck2(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("Friend E-mail ID is Invalid") 
return false 
} 

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

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

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

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

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

if (str.indexOf(" ")!=-1){ 
alert("Friend E-mail ID") 
return false 
} 

return true 
}  

function ValidateForm(){ 
var emailID=document.myform.name
var emailID2=document.myform.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 
}
if ((emailID2.value==null)||(emailID2.value=="")){ 
alert("Please Enter your Friend ID") 
emailID2.focus() 
return false 
}

if (echeck2(emailID2.value)==false){ 
emailID2.value="" 
emailID2.focus() 
return false 
} 


return true 
}