Eval Javascript

HTML

<a href="#" id="004" onclick="fnagg('+'); return false;" >Ver</a>

JavaScript

function fnagg(ope)
{
	var x = 10;
	var y = 20;
	var op = "<";
  
  //alert(eval("x " + op + " y"));
  
  if(eval("x " + op + " y"))
  	alert("osadsa");
  
}