//document.getElementById()
function E(id) {
    if (document.getElementById(id))
        return document.getElementById(id);
    else
        return false;
 }

 function share_twitter(link,text) {
    var _text = encodeURIComponent(text);
    var _link = decodeURIComponent(link);
    window.open('http://twitter.com/share?url=' + _link + '&text=' + _text, 'tw', '', '');
 }

 function share_facebook(link) {
    window.open('http://www.facebook.com/sharer.php?u=' + link, 'fb', '', '');
 }

 function DeleteTableRows(e){
    for (; E(e).rows.length!=0;) {
       E(e).deleteRow(0);
    }
 }