function form1_onsubmit() 
{
	
	if (document.form1.Sector.value =='0')
		{
			alert("Please select sector name 1.");
			document.form1.Sector.focus()
			return false;
		}
	
if (document.form1.s_name.value =='')
		{
			alert("Please enter the your name.");
			document.form1.s_name.focus()
			return false;
		}
if (document.form1.s_email.value =='')
		{
			alert("Please enter the your email address.");
			document.form1.s_email.focus()
			return false;
		}		

		   
		   
		   var str=document.form1.s_email.value
var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
if (filter.test(str))
testresults=true;
else{
alert("Please input a valid email address!")
testresults=false;
}
return (testresults);



var blnEmpty;
	blnEmpty=false;	
     if ((document.form1.txtname1.value !='') || (document.form1.txtcompany1.value !='') || (document.form1.txtemail1.value !=''))
     {blnEmpty=true;
		if (document.form1.txtname1.value =='')
		{
			alert("Please enter the first friend name.");
			document.form1.txtname1.focus()
			return false;
		}
		
		if (document.form1.txtemail1.value =='')
		{
			alert("Please enter the first friend email.");
			document.form1.txtemail1.focus()
			return false;
		}
		//checkEmailAddress(document.form1.txtemail1)
		 var goodEmail = document.form1.txtemail1.value.match(/\b(^(\S+@).+((\.com)|(\.net)|(\.edu)|(\.mil)|(\.gov)|(\.org)|(\..{2,2}))$)\b/gi);
		 if (goodEmail)
		{
		   
		} 
		else 
		  {
		   alert('Please enter a valid e-mail address !');
		   document.form1.txtemail1.focus();
		   return (false);
		 
		   }
		    
	 }

//----------------------------------second friend--------------------------------------------

if ((document.form1.txtname2.value !='') || (document.form1.txtcompany2.value !='') || (document.form1.txtemail2.value !=''))
     {blnEmpty=true;
		if (document.form1.txtname2.value =='')
		{
			alert("Please enter the second friend name.");
			document.form1.txtname2.focus()
			return false;
		}
		
		if (document.form1.txtemail2.value =='')
		{
			alert("Please enter the second friend email.");
			document.form1.txtemail2.focus()
			return false;
		}
		//checkEmailAddress(document.form1.txtemail1)
		 var goodEmail = document.form1.txtemail2.value.match(/\b(^(\S+@).+((\.com)|(\.net)|(\.edu)|(\.mil)|(\.gov)|(\.org)|(\..{2,2}))$)\b/gi);
		 if (goodEmail)
		{
		   
		} 
		else 
		  {
		   alert('Please enter a valid e-mail address !');
		   document.form1.txtemail2.focus();
		   return (false);
		 
		   }
		    
	 }

//----------------------------------3rd friend-------------------------------------

if ((document.form1.txtname3.value !='') || (document.form1.txtcompany3.value !='') || (document.form1.txtemail3.value !=''))
     {blnEmpty=true;
		if (document.form1.txtname3.value =='')
		{
			alert("Please enter the third friend name.");
			document.form1.txtname3.focus()
			return false;
		}
		
		if (document.form1.txtemail3.value =='')
		{
			alert("Please enter the third friend email.");
			document.form1.txtemail3.focus()
			return false;
		}
		//checkEmailAddress(document.form1.txtemail1)
		 var goodEmail = document.form1.txtemail3.value.match(/\b(^(\S+@).+((\.com)|(\.net)|(\.edu)|(\.mil)|(\.gov)|(\.org)|(\..{2,2}))$)\b/gi);
		 if (goodEmail)
		{
		   
		} 
		else 
		  {
		   alert('Please enter a valid e-mail address !');
		   document.form1.txtemail3.focus();
		   return (false);
		 
		   }
		    
	 }
	 
	 //----------------------------4th friend-------------------------------------
	 
	 if ((document.form1.txtname4.value !='') || (document.form1.txtcompany4.value !='') || (document.form1.txtemail4.value !=''))
     {blnEmpty=true;
		if (document.form1.txtname4.value =='')
		{
			alert("Please enter the fourth friend name.");
			document.form1.txtname4.focus()
			return false;
		}
		
		if (document.form1.txtemail4.value =='')
		{
			alert("Please enter the fourth friend email.");
			document.form1.txtemail4.focus()
			return false;
		}
		//checkEmailAddress(document.form1.txtemail1)
		 var goodEmail = document.form1.txtemail4.value.match(/\b(^(\S+@).+((\.com)|(\.net)|(\.edu)|(\.mil)|(\.gov)|(\.org)|(\..{2,2}))$)\b/gi);
		 if (goodEmail)
		{
		   
		} 
		else 
		  {
		   alert('Please enter a valid e-mail address !');
		   document.form1.txtemail4.focus();
		   return (false);
		 
		   }
		    
	 }

//-------------------------------------end---------------------------------------


if (blnEmpty==false) //----this means that this flag still false as from beginig which means the user did not enter any data
{alert("Please enter at least one friend.");
		document.form1.txtname1.focus()
return false;
}
	
return true;
}