function setOver(){
	this.className = this.old_class + ' textbox_focus';
    if(this.old_focus!=undefined)
        this.old_focus();
}

function setOut(){
    this.className = this.old_class;
    if(this.old_blur!=undefined)
        this.old_blur();
}

function setForm(){
	var textbox = document.getElementsByTagName('input');
	
	for(var i=0; i<textbox.length; i++){
		if(textbox[i].type=='text' || textbox[i].type=='password') {
			textbox[i].old_class = textbox[i].className;
			textbox[i].old_blur = textbox[i].onblur;
			textbox[i].old_focus = textbox[i].onfocus;
			textbox[i].onfocus = setOver;
			textbox[i].onblur = setOut;
		}
	}
	
	var textarea = document.getElementsByTagName('textarea');
	
	for(var i=0; i<textarea.length; i++){
	    textarea[i].old_class = textarea[i].className;
	    textarea[i].old_blur = textbox[i].onblur;
		textarea[i].old_focus = textbox[i].onfocus;
		textarea[i].onfocus = setOver;
		textarea[i].onblur = setOut;
	}
}