(function() {
    function lc_paypal_load(){
	    var tid          = '';
		var oidfield     = 'custom';
	    for(var i=0; i < document.forms.length; i++) {
	      if(document.forms[i].action.match(/paypal/))
	        if(eval('document.forms[' + i + '].' + oidfield))
	           eval('document.forms[' + i + '].' + oidfield).value = tid;
	    }    
    }
	if (window.attachEvent)
    	window.attachEvent('onload', lc_paypal_load);
	else window.addEventListener('load', lc_paypal_load, false);
})();