.t12blue {  font-family: tahoma; font-size: 12px;  color: 26416A; text-decoration: none}
.bg1 {  background-attachment: fixed; background-image: url(images/index_22.gif); background-repeat: no-repeat; background-position: left top}
.t12white {  font-family: tahoma; font-size: 12px; color: #FFFFFF; text-decoration: none}


/* 
	Grey Suits you Sir. Please host the images on your own server.
	written by Stuart Colville http://www.muffinresearch.co.uk
*/

.table12, .td12
{
	border               : 1px solid #CCC;
	border-collapse      : collapse;
  font                 : small/1.5 "Tahoma", "Bitstream Vera Sans", Verdana, Helvetica, sans-serif;
}
table12
{
	border                :none;
	border                :1px solid #CCC;
}
thead th12,
.th555
{
	background            : #FFF url(images/bgb.gif) repeat;


}
.boton {
background-color: DFE2E8;
border-color: ffffff;

font-family: tahoma; font-size: 12px ;  color: 26416A; text-decoration: none
}



/*
.campo:hover {background-image: url(images/index_01.jpeg);  }
#comentario:hover { background-image: url(images/campobg.gif); }*/
<style>
.campo {
width: 250px;
height: 20px;
border: 1px Solid #000000;
background: #CDDBEB;
padding: 1px;
color: #000000;
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 10px;
margin-left:80px;
}
.campo:hover{
background-color:#FFffff;
}

/*para explorer*/
.campo {
background-color: expression('#ffffff',
/*this.onmouseover = function() { this.runtimeStyle.backgroundColor = '#DFE2E8'; },
this.onmouseout = function() { this.runtimeStyle.backgroundColor = '#ffffff'; });
this.onkeydown = function() { this.runtimeStyle.backgroundColor = '#cc0000'; },*/
this.onkeyup = function() { this.runtimeStyle.backgroundColor = '#DFE2E8'; });


</style>