FileExists/Function Problem

[iGeekiHackiMatt]

I Am Running Into A Problem And Have Narrowed It Down To This Function, As You Can See I Have Tried To DeBug it (some remains are the commented out areas), But I Cannot Figure Out What Is Wrong, Thank You For Your Help!!

		function Check3() {
			Name2 = document.getElementById('Name').value;
			FEN = Name2+'.html';
			//alert ('Check3');
			if ((EN = 'EN') || (ECN == 'ECN')) {
				if (FileExists(FEN) == True) {
					EFE();
					alert ('IF');
					}
				else {
					alert ('ELSE');
					lastcheck();
					};
				};
			//lastcheck();
			//alert ('AFTER LAST CALL');
			};