function cget(searchClass,tag) {
var classElements = new Array();
if ( tag == null ){
tag = '*';
}
var els = document.getElementsByTagName(tag);
var elsLen = els.length;
var pattern = new RegExp(searchClass);
for (i = 0, j = 0; i < elsLen; i++) {
if ( pattern.test(els[i].className) ) {
classElements[j] = els[i];
j++;
}
}
return classElements;
}