function check_email(frm){
									var str = frm;
									var valid = false;
									var RE_symbol = /@/;
									var RE_strUsername = /\w/;
									var RE_strURL = /\./;
		
									// search string for @ symbol
									if ( str.search(RE_symbol) == -1 || str.search(RE_strURL) == -1 ) {
										valid = false;
									}
									else {
										valid = true;
									}
									return valid;
							}
							
							function checkForm(){
								var returnValue = false;
								var emailValid = true;
								
								if ( document.form1.email.value != "" ){
									emailValid = check_email(document.form1.email.value);
								}
								
								if (document.form1.first_name.value == "" ){
									alert("Please fill in your First Name.");
									document.form1.first_name.focus();
								}
								else if ( document.form1.last_name.value == "" ){
									alert("Please fill in your Last Name.");
									document.form1.last_name.focus();
								}
								else if ( document.form1.email.value == "" ){
									alert("Please fill in an E-mail Address.");
									document.form1.email.focus();
								}
								else if ( emailValid == false ){
									alert("Please enter a valid email: <user>@<organization>.<domain>");
									document.form1.email.focus();
								}
								else if ( document.form1.phone.value == "" ){
									alert("Please enter a Telephone Number.");
									document.form1.phone.focus();
								}
								else if ( document.form1.imgcode.value == "" ){
									alert("Please enter a Image Code.");
									document.form1.imgcode.focus();
								}
								else
									returnValue = true;
								
								return returnValue;
							}