String.prototype.trim = function() {

 // skip leading and trailing whitespace
 // and return everything in between
  return this.replace(/^\s*(\b.*\b|)\s*$/, "$1");

}
function isBlank(obj, msg)
{
  if (obj.value==null || ltrim(obj.value)=="")
  {  
  	alert(msg); 
  	obj.focus();
	return true;
  }
  return false;
}	

function replaceApice(objValue){
		var temp = objValue.toString().replace(/'/g,'´');
		return temp;
}

function replaceApiceOBJ(obj){
        var objValue = obj.value;
		var temp = objValue.toString().replace(/'/g,'´');
		obj.value = temp;
}