function validate(){var b="";var a=document.signupform.email.value;if(a.length==0){b="Please enter your email address";document.signupform.email.focus();}else{if(!check_email(a)){b="Please enter a valid email address";document.signupform.email.select();}}if(b.length==0){document.signupform.submit();}else{alert(b);}}function check_email(d){var b="1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";for(i=0;i<d.length;i++){if(b.indexOf(d.charAt(i))<0){return(false);}}if(document.images){var c=/(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;var a=/^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;if(!d.match(c)&&d.match(a)){return(-1);}}}