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

function rubber(){
        
        var obj1 = (getElementsByClass('content',null,'div'));
        var obj2 = (getElementsByClass('right_td',null,'td'));
        var obj3 = (getElementsByClass('content1',null,'div'));
        obj3[0].style.height = (obj2[0].offsetHeight)+'px';
}

window.onload = function(){
    rubber();    
}

window.onresize = function(){
    rubber();    
}