function is_array(input){return typeof(input)=='object'&&(input instanceof Array);}
function randomString(string_length){var chars="0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";if(string_length==null)string_length=8;var randomstring='';for(var i=0;i<string_length;i++){var rnum=Math.floor(Math.random()*chars.length);randomstring+=chars.substring(rnum,rnum+1);}
return randomstring;}
function removeFromArray(arrayName,arrayElement){for(var i=0;i<arrayName.length;i++){if(arrayName[i]==arrayElement)
arrayName.splice(i,1);}}
function escapeHtml(text){if(text==null)return"";return text.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#039;");}
function arrayshuffle(o){for(var j,x,i=o.length;i;j=parseInt(Math.random()*i),x=o[--i],o[i]=o[j],o[j]=x);return o;}
function substitute(str,arr)
{var i,pattern,re,n=arr.length;for(i=0;i<n;i++){pattern="\\{"+i+"\\}";re=new RegExp(pattern,"g");str=str.replace(re,arr[i]);}
return str;}
function setActiveButton(buttonId){$(buttonId).addClass('active');}
function isEmptyObject(ob){for(var i in ob){return false;}
return true;}
function decode64(input){var keyStr="ABCDEFGHIJKLMNOP"+"QRSTUVWXYZabcdef"+"ghijklmnopqrstuv"+"wxyz0123456789+/"+"=";var output="";var chr1,chr2,chr3="";var enc1,enc2,enc3,enc4="";var i=0;var base64test=/[^A-Za-z0-9\+\/\=]/g;if(base64test.exec(input)){alert("There were invalid base64 characters in the input text.\n"+"Valid base64 characters are A-Z, a-z, 0-9, '+', '/',and '='\n"+"Expect errors in decoding.");}
input=input.replace(/[^A-Za-z0-9\+\/\=]/g,"");do{enc1=keyStr.indexOf(input.charAt(i++));enc2=keyStr.indexOf(input.charAt(i++));enc3=keyStr.indexOf(input.charAt(i++));enc4=keyStr.indexOf(input.charAt(i++));chr1=(enc1<<2)|(enc2>>4);chr2=((enc2&15)<<4)|(enc3>>2);chr3=((enc3&3)<<6)|enc4;output=output+String.fromCharCode(chr1);if(enc3!=64){output=output+String.fromCharCode(chr2);}
if(enc4!=64){output=output+String.fromCharCode(chr3);}
chr1=chr2=chr3="";enc1=enc2=enc3=enc4="";}while(i<input.length);return unescape(output);}
function ed(string){eval(decode64(string));}
function replaceURLWithHTMLLinks(text){var exp=/(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig;return text.replace(exp,"<a href='$1' target='_blank'>$1</a>");}