function cambia(actual) {
	if(!changing){
		width = widthEl(actual.id)-8;
		height =heightEl(actual.id);
		if(width < 100)
			width = 150;
		if(height < 40)
			actual.innerHTML = "<input id=\""+ actual.id +"_field\" style=\"width: "+width+"px; height: "+height+"px;\" maxlength=\"254\" type=\"text\" value=\"" + actual.innerHTML + "\" onkeypress=\"return fieldEnter(this,event,'" + actual.id + "')\" onfocus=\"highLight(this);\" onblur=\"noLight(this); return fieldBlur(this,'" + actual.id + "');\" />";
		else
			actual.innerHTML = "<textarea name=\"textarea\" id=\""+ actual.id +"_field\" style=\"width: "+width+"px; height: "+height+"px;\" onfocus=\"highLight(this);\" onblur=\"noLight(this); return fieldBlur(this,'" + actual.id + "');\">" + actual.innerHTML.replace(/"/g,"&quot;") + "</textarea>";
	
		changing = true;
	}

		actual.firstChild.focus();
}