// JavaScript Document

function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function isValidEmail(str)
{
   return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
 
}

function checkURL(value) {
var urlregex = new RegExp("^(http:\/\/www.|https:\/\/www.|ftp:\/\/www.|www.){1}([0-9A-Za-z]+\.)");
if(urlregex.test(value))
{
return(true);
}
return(false); 
}
function validate()
{
name = document.getElementById("Name").value;	
mail=document.getElementById("Email").value;
phone = document.getElementById("Phone").value;
url=document.getElementById("website").value;

 
if(name==""){ alert ("Please Enter Your Name"); return false; }
if(mail=="") { alert ("Please Enter Your Email Address"); return false;}
if (!isValidEmail(mail)){ alert("Please Enter A Valid E-mail Address"); return false; }
if(phone=="") { alert ("Please Enter A Valid Phone No."); return false;}
if(!isInteger(phone)){ alert ("Please Enter A Valid Phone No."); return false; }
if(url=="") { alert ("Please Enter URL Address"); return false;}
if (!checkURL(url)){ alert("Please Enter A Valid URL Address"); return false; }

}
//-->

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