function chCtr_getObj(b){var a;if(document.all){if(typeof b=="string"){return document.all(b)}else{return b.style}}if(document.getElementById){if(typeof b=="string"){return document.getElementById(b)}else{return b.style}}return null}function Contar(e,f,b,a){var c=chCtr_getObj(e);var d=chCtr_getObj(f);var g=a-c.value.length;if(g<=0){g=0;b='<span class="disable"> '+b+" </span>";c.value=c.value.substr(0,a)}d.innerHTML=b.replace("{CHAR}",g)};