function generar(){
var color = document.getElementById('color').value;
var txt = "";
if (color != "") {
txt += '<style> body { border-right:'+color+' 14px outset; border-top:'+color+' 14px outset; border-left:'+color+' 14px outset; border-bottom: '+color+' 14px outset; } </style><div style="position:absolute;left:0px;top:0px"><a href="http://www.dedicame.com" target="_blank"><img src="http://img507.imageshack.us/img507/3946/banerhi51km8rn4.gif" border="0"/></a></div>';
}
document.getElementById('mostrar').value=txt;
}

function limpiar(){
document.getElementById('mostrar').value="";
}