function searchBoxActivate(s){
	var sb= document.thisone.Ntt;
	switch(s){
		case 0:
			if(sb.value=='')
				sb.value = 'Enter your model number...';
			break;
		case 1:
			if(sb.value=='Enter your model number...')
				sb.value = '';
			sb.focus();	
	}			
}