function compare(total){
	var values = "";
	if(total>0){
		for(i=1;i<=total;i++){
			if(document.getElementById("cbComp"+i).checked == true){
				values+=document.getElementById("cbComp"+i).value+",";
			}
			
		}
	}
	
	if(values != ""){
		url = "index.php?controller=Comparator&values="+values;
				
		windowx = window.open(url,"comparador","directories=yes,toolbar=yes,location=yes,menubar=yes,scrollbars=yes,resizable=yes,maximized=yes");
		windowx.focus();
		
	}
}
var numCheckboxes = 0;
function validateCompare(cb){
	if(cb.checked == true){
		if(numCheckboxes >= 3){
			cb.checked = false;
			alert("Solo se pueden seleccionar 3 productos!!");
		}else{
			numCheckboxes++;
		}
	}else{
		numCheckboxes--;	
	}
}

function cleanCompareValues(total){
	if(total>0){
		for(i=1;i<=total;i++){
			document.getElementById("cbComp"+i).checked = false;	
		}
		numCheckboxes=0;
	}
}