function isemail(string){var pattern=/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/;return pattern.test(string)}function checkbox_one_checked(form,fname){var el,grp,e=0;while(el=form.elements[e++]){if(el.type=='checkbox'&&el.name&&el.name==fname){grp=form[el.name];for(var i=0;i<grp.length;++i)if(grp[i].checked)break;if(i==grp.length)return false;e+=grp.length-1}}return true}function radio_one_checked(form,fname){for(i=0;i<form.f9.length;i++){if(form.f9[i].checked==true)return true}return false}function getextension(filename){filename=filename.toLowerCase();var farray=filename.split(".");if(farray.length==1)return false;return farray[farray.length-1]}function checkextension(extension){if(!extension)return false;var extlist=new Array("bat","exe","cgi","php","phtml","php3","inc","shtml","pl","php4","phtm","asp","asx","py","php5","sh");for(var i=0;i<extlist.length;i++){if(extlist[i]==extension)return false}return true}function checkfields(form){var missingfields="";if(form.f1.value==""){missingfields+="\n- Name on card (Missing field)"}if(form.f12.value!=""){if(!isemail(form.f12.value)){missingfields+="\n- Your email address (Invalid email address)"}}else{missingfields+="\n- Your email address (Missing field)"}if(form.f3.value!=""){extension=getextension(form.f3.value);if(!checkextension(extension)){missingfields+="\n- Photo #1 (Extension not accepted)"}}else{missingfields+="\n- Photo #1 (Missing field)"}if(form.f4.value!=""){extension=getextension(form.f4.value);if(!checkextension(extension)){missingfields+="\n- Photo #2 (Extension not accepted)"}}if(form.f5.value!=""){extension=getextension(form.f5.value);if(!checkextension(extension)){missingfields+="\n- Photo #3 (Extension not accepted)"}}if(form.f6.value!=""){extension=getextension(form.f6.value);if(!checkextension(extension)){missingfields+="\n- Photo #4 (Extension not accepted)"}}if(form.f7.value!=""){extension=getextension(form.f7.value);if(!checkextension(extension)){missingfields+="\n- Photo #5 (Extension not accepted)"}}if(form.f8.value!=""){extension=getextension(form.f8.value);if(!checkextension(extension)){missingfields+="\n- Photo #6 (Extension not accepted)"}}if(form.f9.value!=""){extension=getextension(form.f9.value);if(!checkextension(extension)){missingfields+="\n- Photo #7 (Extension not accepted)"}}if(missingfields!=""){alert("The following fields are incorrect:\n"+missingfields);return false}else{var accepted=true;if(accepted==true){form.submit.disabled=true}return accepted}}