function validation()

 {

	    var emailID=document.getElementById('email');

	 if(document.form1.name.value=='')

	  {

		   alert('Please enter your name');

		   document.form1.name.focus();

		   return false;

		  }

		  if(document.form1.ph1.value=='')

		  {

			   alert('Please enter country code');

			   document.form1.ph1.focus();

			   return false;

			  } 

			   if(isNaN(document.form1.ph1.value))

			  { 

			  

			      alert('Please enter country code digit only');

				  document.form1.ph1.value='';

			   document.form1.ph1.focus();

			   return false;

				  }

			   if(document.form1.ph2.value=='')

		  {

			   alert('Please enter std code');

			   document.form1.ph2.focus();

			   return false;

			  }  

				   if(isNaN(document.form1.ph2.value))

			  { 

			  

			      alert('Please enter std code digit only');

				  document.form1.ph2.value='';

			   document.form1.ph2.focus();

			   return false;

				  }

			   if(document.form1.ph3.value=='')

		  {

			   alert('Please enter phone number');

			   document.form1.ph3.focus();

			   return false;

			  }  

				   if(isNaN(document.form1.ph3.value))

			  { 

			  

			      alert('Please enter phone number digit only');

				  document.form1.ph3.value='';

			   document.form1.ph3.focus();

			   return false;

				  }

			  if(document.form1.email.value=='')

				  {

					   alert('Please enter your email');

					   document.form1.email.focus();

					   return false;

					  }

					    if(echeck(emailID.value)==false)

	    	{

				emailID.value=""

				emailID.focus()

				return false;

	     	}

					   if(document.form1.query.value=='')

				       {

					   alert('Please enter your query');

					   document.form1.query.focus();

					   return false;

					  }

		  return true;

	 }

	  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					

	}