function validInput(obj) {

	// Checks if a name is valid, no ' or ".
	var temp = obj.value;
	if (temp.length>0) {
	
		var count, rtrn, ASCII
		rtrn = "";
		for (count=0; count<=temp.length; count++) {	
		
			// Only aplha-characters.
			ASCII = temp.charCodeAt(count);
			
			if (ASCII!=34 && ASCII!=39) {
				rtrn += String.fromCharCode(ASCII);
			}
		}
		
		obj.value = rtrn;
		if (obj.value!="") {
		
			if (rtrn.length!=0) {
				return true;
			}
			else {
				return false;
			}
		}
		else {
		
			return false;
		}
	}
	else {
			
		return false;
	}
}