function isEmail(Ml)

{

  if(!Ml){return true}

  if(Ml.indexOf("@")<=0 || Ml.indexOf("@")==Ml.length-1 || Ml.indexOf(".")<=0 || Ml.indexOf(".")==Ml.length-1 || Ml.indexOf("..")!=-1 || Ml.indexOf("@@")!=-1 || Ml.indexOf("@.")!=-1 || Ml.indexOf(".@")!=-1)

  {

      return false

  }

  else

  {

      return true

  }

}



function Trim (s){return LTrim(RTrim(' '+s));}

function LTrim (s)

{

    if(!s){return '';}

    while(s.charAt(0)==' ')

        s = s.substring(1,s.length);

    return s;

}

//..............



function RTrim (s)

{

    if(!s || s==' '){return '';}

    if (s.length > 1)

    {

        while(s.charAt(s.length-1)==' ')

            s = s.substring(0,s.length-2);

        return s;

    }

}





function ValidCon(frm)

{

    var txt="";

	

	if(!frm.fname.value)

	{

		txt+="     First Name should not be empty.\n"

	}

	if(!frm.lname.value)

	{

		txt+="     Last Name should not be empty.\n"

	}

	if(!Trim(frm.email.value) || !isEmail(frm.email.value))

	{

	   txt+="     Enter valid email address.\n"

       

 	}

	if(!frm.message.value)

	{

		txt+="     You did not put any message.\n"

	}  

   	if(txt)

	{

   		alert("Sorry!! Following errors has been occured :\n\n"+ txt +"\n     Please Check");

  	 	return false

	}

    return true	

}