javascript submit()

function isValidEmail(str) 
			{
			   return (str.indexOf(".") > 2) && (str.indexOf("@") > 0) ;
			}
 
 
function checkInputs()
{
		  var theName=document.mainform.name.value;
		  var theEmail1=document.mainform.email_from1.value;
		  var theEmail2=document.mainform.email_from2.value;
		  var no_of_pals=document.mainform.no_of_friends.options[document.mainform.no_of_friends.selectedIndex].value;
		  var found_error=0;		
			if(theName=="" )
			{
			alert ("Name field cannot be blank, please enter your name in the name field");
			document.getElementById("name").focus();
			}
			else if(theEmail1=="" )
			{
			alert ("The eMail field cannot be blank, please enter your email in the email field");
			document.getElementById("email_from1").focus();
			}
			else if(theEmail2=="" )
			{
			alert ("Oops! You need to confirm your email by entering your email a second time in the second email box");
			document.getElementById("email_from2").focus();
			}
			else if(theEmail1 != theEmail2)
			{
				alert("Oopsy! Your email addresses dont match! \n Enter the exact same email address in the repeat email address box.");
				document.getElementById("email_from2").focus();
			}
 
			else if(isValidEmail(document.mainform.email_from1.value) != true )
					{
						alert ("Oops!Looks like you have a little typo in your email address! \n The address you entered is not valid. Check it and try again!");
						document.getElementById("email_from1").focus();
						
					}			
 
		  for (var x = 1; x <= no_of_pals; x++)
		   {
			   if(document.getElementById("rec_name"+x).value =="")
					{
						alert ("Oops!We found a teensy weensy error! You need to enter the names of all recipients");
						document.getElementById("rec_name"+x).focus();break;
					}
			   else if(document.getElementById("rec_email"+x).value =="" )
					{
						alert ("Oops!We found a teensy weensy error! You forgot to enter the recipients email!");
						document.getElementById("rec_email"+x).focus();break;
					}
				else if(isValidEmail(document.getElementById("rec_email"+x).value) != true )
					{
						alert ("Oops!Looks like you have a little typo in the recipients email address! \n The address you entered is not valid. Check it and try again!");
						document.getElementById("rec_email"+x).focus();break;
					}				
		   }
 
 
			   		
//		 mainform
document.mainform.submit();
//document.mainform.submit();
		  
}